[8.x] [Discover] Fix many_fields performance journey (#194887) (#194911)

# Backport

This will backport the following commits from `main` to `8.x`:
- [[Discover] Fix many_fields performance journey
(#194887)](https://github.com/elastic/kibana/pull/194887)

<!--- Backport version: 9.4.3 -->

### Questions ?
Please refer to the [Backport tool
documentation](https://github.com/sqren/backport)

<!--BACKPORT [{"author":{"name":"Davis
McPhee","email":"davis.mcphee@elastic.co"},"sourceCommit":{"committedDate":"2024-10-04T07:46:40Z","message":"[Discover]
Fix many_fields performance journey (#194887)\n\n## Summary\r\n\r\nThis
PR fixes the many_fields performance journey skipped in #193305.\r\nThe
journey started failing the same time #192698 was merged, so it\r\nlooks
to be related to the test change from that PR. This PR changes
the\r\ntest to click the 4th row's expand button instead of the final
button,\r\nwhich seemed to be flaky, since the 4th button still avoids
the search\r\nsessions popover.\r\n\r\nFlaky test
runs:\r\n-\r\nhttps://buildkite.com/elastic/kibana-flaky-test-suite-runner/builds/7079\r\n\r\nFixes
#193305.\r\n\r\n### Checklist\r\n\r\n- [ ] Any text added follows [EUI's
writing\r\nguidelines](https://elastic.github.io/eui/#/guidelines/writing),
uses\r\nsentence case text and includes
[i18n\r\nsupport](https://github.com/elastic/kibana/blob/main/packages/kbn-i18n/README.md)\r\n-
[
]\r\n[Documentation](https://www.elastic.co/guide/en/kibana/master/development-documentation.html)\r\nwas
added for features that require explanation or tutorials\r\n- [x] [Unit
or
functional\r\ntests](https://www.elastic.co/guide/en/kibana/master/development-tests.html)\r\nwere
updated or added to match the most common scenarios\r\n- [x] [Flaky
Test\r\nRunner](https://ci-stats.kibana.dev/trigger_flaky_test_runner/1)
was\r\nused on any tests changed\r\n- [ ] Any UI touched in this PR is
usable by keyboard only (learn more\r\nabout [keyboard
accessibility](https://webaim.org/techniques/keyboard/))\r\n- [ ] Any UI
touched in this PR does not create any new axe failures\r\n(run axe in
browser:\r\n[FF](https://addons.mozilla.org/en-US/firefox/addon/axe-devtools/),\r\n[Chrome](https://chrome.google.com/webstore/detail/axe-web-accessibility-tes/lhdoppojpmngadmnindnejefpokejbdd?hl=en-US))\r\n-
[ ] If a plugin configuration key changed, check if it needs to
be\r\nallowlisted in the cloud and added to the
[docker\r\nlist](https://github.com/elastic/kibana/blob/main/src/dev/build/tasks/os_packages/docker_generator/resources/base/bin/kibana-docker)\r\n-
[ ] This renders correctly on smaller devices using a
responsive\r\nlayout. (You can test this [in
your\r\nbrowser](https://www.browserstack.com/guide/responsive-testing-on-local-server))\r\n-
[ ] This was checked for
[cross-browser\r\ncompatibility](https://www.elastic.co/support/matrix#matrix_browsers)\r\n\r\n###
For maintainers\r\n\r\n- [ ] This was checked for breaking API changes
and was
[labeled\r\nappropriately](https://www.elastic.co/guide/en/kibana/master/contributing.html#kibana-release-notes-process)","sha":"2c9de9795fd7e97016ec14a03571d4fc1d19f5ab","branchLabelMapping":{"^v9.0.0$":"main","^v8.16.0$":"8.x","^v(\\d+).(\\d+).\\d+$":"$1.$2"}},"sourcePullRequest":{"labels":["release_note:skip","v9.0.0","Team:DataDiscovery","backport:prev-minor"],"title":"[Discover]
Fix many_fields performance
journey","number":194887,"url":"https://github.com/elastic/kibana/pull/194887","mergeCommit":{"message":"[Discover]
Fix many_fields performance journey (#194887)\n\n## Summary\r\n\r\nThis
PR fixes the many_fields performance journey skipped in #193305.\r\nThe
journey started failing the same time #192698 was merged, so it\r\nlooks
to be related to the test change from that PR. This PR changes
the\r\ntest to click the 4th row's expand button instead of the final
button,\r\nwhich seemed to be flaky, since the 4th button still avoids
the search\r\nsessions popover.\r\n\r\nFlaky test
runs:\r\n-\r\nhttps://buildkite.com/elastic/kibana-flaky-test-suite-runner/builds/7079\r\n\r\nFixes
#193305.\r\n\r\n### Checklist\r\n\r\n- [ ] Any text added follows [EUI's
writing\r\nguidelines](https://elastic.github.io/eui/#/guidelines/writing),
uses\r\nsentence case text and includes
[i18n\r\nsupport](https://github.com/elastic/kibana/blob/main/packages/kbn-i18n/README.md)\r\n-
[
]\r\n[Documentation](https://www.elastic.co/guide/en/kibana/master/development-documentation.html)\r\nwas
added for features that require explanation or tutorials\r\n- [x] [Unit
or
functional\r\ntests](https://www.elastic.co/guide/en/kibana/master/development-tests.html)\r\nwere
updated or added to match the most common scenarios\r\n- [x] [Flaky
Test\r\nRunner](https://ci-stats.kibana.dev/trigger_flaky_test_runner/1)
was\r\nused on any tests changed\r\n- [ ] Any UI touched in this PR is
usable by keyboard only (learn more\r\nabout [keyboard
accessibility](https://webaim.org/techniques/keyboard/))\r\n- [ ] Any UI
touched in this PR does not create any new axe failures\r\n(run axe in
browser:\r\n[FF](https://addons.mozilla.org/en-US/firefox/addon/axe-devtools/),\r\n[Chrome](https://chrome.google.com/webstore/detail/axe-web-accessibility-tes/lhdoppojpmngadmnindnejefpokejbdd?hl=en-US))\r\n-
[ ] If a plugin configuration key changed, check if it needs to
be\r\nallowlisted in the cloud and added to the
[docker\r\nlist](https://github.com/elastic/kibana/blob/main/src/dev/build/tasks/os_packages/docker_generator/resources/base/bin/kibana-docker)\r\n-
[ ] This renders correctly on smaller devices using a
responsive\r\nlayout. (You can test this [in
your\r\nbrowser](https://www.browserstack.com/guide/responsive-testing-on-local-server))\r\n-
[ ] This was checked for
[cross-browser\r\ncompatibility](https://www.elastic.co/support/matrix#matrix_browsers)\r\n\r\n###
For maintainers\r\n\r\n- [ ] This was checked for breaking API changes
and was
[labeled\r\nappropriately](https://www.elastic.co/guide/en/kibana/master/contributing.html#kibana-release-notes-process)","sha":"2c9de9795fd7e97016ec14a03571d4fc1d19f5ab"}},"sourceBranch":"main","suggestedTargetBranches":[],"targetPullRequestStates":[{"branch":"main","label":"v9.0.0","branchLabelMappingKey":"^v9.0.0$","isSourceBranch":true,"state":"MERGED","url":"https://github.com/elastic/kibana/pull/194887","number":194887,"mergeCommit":{"message":"[Discover]
Fix many_fields performance journey (#194887)\n\n## Summary\r\n\r\nThis
PR fixes the many_fields performance journey skipped in #193305.\r\nThe
journey started failing the same time #192698 was merged, so it\r\nlooks
to be related to the test change from that PR. This PR changes
the\r\ntest to click the 4th row's expand button instead of the final
button,\r\nwhich seemed to be flaky, since the 4th button still avoids
the search\r\nsessions popover.\r\n\r\nFlaky test
runs:\r\n-\r\nhttps://buildkite.com/elastic/kibana-flaky-test-suite-runner/builds/7079\r\n\r\nFixes
#193305.\r\n\r\n### Checklist\r\n\r\n- [ ] Any text added follows [EUI's
writing\r\nguidelines](https://elastic.github.io/eui/#/guidelines/writing),
uses\r\nsentence case text and includes
[i18n\r\nsupport](https://github.com/elastic/kibana/blob/main/packages/kbn-i18n/README.md)\r\n-
[
]\r\n[Documentation](https://www.elastic.co/guide/en/kibana/master/development-documentation.html)\r\nwas
added for features that require explanation or tutorials\r\n- [x] [Unit
or
functional\r\ntests](https://www.elastic.co/guide/en/kibana/master/development-tests.html)\r\nwere
updated or added to match the most common scenarios\r\n- [x] [Flaky
Test\r\nRunner](https://ci-stats.kibana.dev/trigger_flaky_test_runner/1)
was\r\nused on any tests changed\r\n- [ ] Any UI touched in this PR is
usable by keyboard only (learn more\r\nabout [keyboard
accessibility](https://webaim.org/techniques/keyboard/))\r\n- [ ] Any UI
touched in this PR does not create any new axe failures\r\n(run axe in
browser:\r\n[FF](https://addons.mozilla.org/en-US/firefox/addon/axe-devtools/),\r\n[Chrome](https://chrome.google.com/webstore/detail/axe-web-accessibility-tes/lhdoppojpmngadmnindnejefpokejbdd?hl=en-US))\r\n-
[ ] If a plugin configuration key changed, check if it needs to
be\r\nallowlisted in the cloud and added to the
[docker\r\nlist](https://github.com/elastic/kibana/blob/main/src/dev/build/tasks/os_packages/docker_generator/resources/base/bin/kibana-docker)\r\n-
[ ] This renders correctly on smaller devices using a
responsive\r\nlayout. (You can test this [in
your\r\nbrowser](https://www.browserstack.com/guide/responsive-testing-on-local-server))\r\n-
[ ] This was checked for
[cross-browser\r\ncompatibility](https://www.elastic.co/support/matrix#matrix_browsers)\r\n\r\n###
For maintainers\r\n\r\n- [ ] This was checked for breaking API changes
and was
[labeled\r\nappropriately](https://www.elastic.co/guide/en/kibana/master/contributing.html#kibana-release-notes-process)","sha":"2c9de9795fd7e97016ec14a03571d4fc1d19f5ab"}}]}]
BACKPORT-->

Co-authored-by: Davis McPhee <davis.mcphee@elastic.co>

x-pack/performance/journeys_e2e/many_fields_discover.ts

@@ -9,8 +9,6 @@ import { Journey } from '@kbn/journeys';
 import { subj } from '@kbn/test-subj-selector';
 
 export const journey = new Journey({
-  // Failing: See https://github.com/elastic/kibana/issues/193305
-  skipped: true,
   kbnArchives: ['test/functional/fixtures/kbn_archiver/many_fields_data_view'],
   esArchives: ['test/functional/fixtures/es_archiver/many_fields'],
 })
@@ -24,9 +22,9 @@ export const journey = new Journey({
     await page.waitForSelector('[data-test-subj="discoverDocTable"][data-render-complete="true"]');
     await page.waitForSelector(subj('globalLoadingIndicator-hidden'));
   })
-  .step('Expand the first document', async ({ page }) => {
+  .step('Expand a document', async ({ page }) => {
     const expandButtons = page.locator(subj('docTableExpandToggleColumn'));
-    await expandButtons.last().click();
+    await expandButtons.nth(3).click();
     await page.waitForSelector(subj('docTableRowAction'));
     await page.click(subj('docTableRowAction'));
     await page.waitForSelector(subj('globalLoadingIndicator-hidden'));