[8.x] [ObsUX][A11y] Fix focus for popover in details flyout (#218095) (#218126)

# Backport

This will backport the following commits from `main` to `8.x`:
- [[ObsUX][A11y] Fix focus for popover in details flyout
(#218095)](https://github.com/elastic/kibana/pull/218095)

<!--- Backport version: 9.6.6 -->

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

<!--BACKPORT
[{"author":{"name":"Miriam","email":"31922082+MiriamAparicio@users.noreply.github.com"},"sourceCommit":{"committedDate":"2025-04-14T14:15:25Z","message":"[ObsUX][A11y]
Fix focus for popover in details flyout (#218095)\n\nCloses
https://github.com/elastic/kibana/issues/212633\n\n## Summary\n\nFixed
navigation by keeping focus on Popover opener element\n\n### How to
test\nObservability -> Infrastructure -> Infrastructure inventory
page.\n1. Navigate to any square below All button.\n2. Press Enter.\n3.
Navigate to infographic for Host IP.\n4. Press Enter.\n5. Press
Esc.\n\nExpected result: Navigation continues to next element when Tab
key is\npressed.\n\nBEFORE
\n\n\nb01e6955-b659-4d9a-abcf-1ece48adc161","sha":"26d9f5f7d0d24eaa8fdefc9a92747de4e3cc5a66","branchLabelMapping":{"^v9.1.0$":"main","^v8.19.0$":"8.x","^v(\\d+).(\\d+).\\d+$":"$1.$2"}},"sourcePullRequest":{"labels":["release_note:skip","v9.0.0","Team:obs-ux-infra_services","backport:version","v8.18.0","v9.1.0","v8.19.0"],"title":"[ObsUX][A11y]
Fix focus for popover in details
flyout","number":218095,"url":"https://github.com/elastic/kibana/pull/218095","mergeCommit":{"message":"[ObsUX][A11y]
Fix focus for popover in details flyout (#218095)\n\nCloses
https://github.com/elastic/kibana/issues/212633\n\n## Summary\n\nFixed
navigation by keeping focus on Popover opener element\n\n### How to
test\nObservability -> Infrastructure -> Infrastructure inventory
page.\n1. Navigate to any square below All button.\n2. Press Enter.\n3.
Navigate to infographic for Host IP.\n4. Press Enter.\n5. Press
Esc.\n\nExpected result: Navigation continues to next element when Tab
key is\npressed.\n\nBEFORE
\n\n\nb01e6955-b659-4d9a-abcf-1ece48adc161","sha":"26d9f5f7d0d24eaa8fdefc9a92747de4e3cc5a66"}},"sourceBranch":"main","suggestedTargetBranches":["9.0","8.18","8.x"],"targetPullRequestStates":[{"branch":"9.0","label":"v9.0.0","branchLabelMappingKey":"^v(\\d+).(\\d+).\\d+$","isSourceBranch":false,"state":"NOT_CREATED"},{"branch":"8.18","label":"v8.18.0","branchLabelMappingKey":"^v(\\d+).(\\d+).\\d+$","isSourceBranch":false,"state":"NOT_CREATED"},{"branch":"main","label":"v9.1.0","branchLabelMappingKey":"^v9.1.0$","isSourceBranch":true,"state":"MERGED","url":"https://github.com/elastic/kibana/pull/218095","number":218095,"mergeCommit":{"message":"[ObsUX][A11y]
Fix focus for popover in details flyout (#218095)\n\nCloses
https://github.com/elastic/kibana/issues/212633\n\n## Summary\n\nFixed
navigation by keeping focus on Popover opener element\n\n### How to
test\nObservability -> Infrastructure -> Infrastructure inventory
page.\n1. Navigate to any square below All button.\n2. Press Enter.\n3.
Navigate to infographic for Host IP.\n4. Press Enter.\n5. Press
Esc.\n\nExpected result: Navigation continues to next element when Tab
key is\npressed.\n\nBEFORE
\n\n\nb01e6955-b659-4d9a-abcf-1ece48adc161","sha":"26d9f5f7d0d24eaa8fdefc9a92747de4e3cc5a66"}},{"branch":"8.x","label":"v8.19.0","branchLabelMappingKey":"^v8.19.0$","isSourceBranch":false,"state":"NOT_CREATED"}]}]
BACKPORT-->

Co-authored-by: Miriam <31922082+MiriamAparicio@users.noreply.github.com>

x-pack/solutions/observability/plugins/infra/public/components/asset_details/tabs/common/popover.tsx

@@ -29,7 +29,7 @@ export const Popover = ({
     <EuiPopover
       panelPaddingSize="s"
       focusTrapProps={{
-        returnFocus: false,
+        returnFocus: true,
       }}
       button={
         <button