[Uptime] Unskip flaky Overview Page tests (#214807)

## Summary

Resolves #57737.
Resolves [#89072](https://github.com/elastic/kibana/issues/89072).

40/40 ✅
[run](https://buildkite.com/elastic/kibana-flaky-test-suite-runner/builds/8051)
on Flaky Test Runner.

- [Example #57737
success](https://buildkite.com/elastic/kibana-flaky-test-suite-runner/builds/8051#0195a4d4-f2d0-4be4-a91d-6b0d4b6ba84d/240-1226)
- [Example #89072
success](https://buildkite.com/elastic/kibana-flaky-test-suite-runner/builds/8051#0195a4d4-f2d0-4be4-a91d-6b0d4b6ba84d/240-1231)

Using the page elements manually on the test server version of Kibana, I
can click through and execute all these tests by hand. However, for some
reason web driver does not click the elements and make the desired
things happen.

All of the behaviors we are testing are configurable via the URL params,
so I'm relying on the URL to set the app state to the expected
conditions to verify the app is working. These page elements are also
tested via unit-level tests, so I don't think we are losing any
practical coverage for this soon-to-be-deprecated code.

Additionally, I removed the code in the `beforeEach` hook that utilizes
the date picker to set the default start/end range fields. This takes
_forever_, and our tests don't need to test that `SuperDatePicker` is
doing its job (again, our implementation has unit tests to verify the
correct callbacks are provided and that they handle the input criteria).
Instead we simply `navigateToApp` with the default parameters specified
in the URL search.

x-pack/test/functional/apps/uptime/overview.ts

@@ -9,6 +9,7 @@ import expect from '@kbn/expect';
 import { FtrProviderContext } from '../../ftr_provider_context';
 
 export const UPTIME_HEARTBEAT_DATA = 'x-pack/test/functional/es_archives/uptime/full_heartbeat';
+const DEFAULT_NAVIGATION_SEARCH = `dateRangeEnd=2019-09-11T19:40:08.078Z&dateRangeStart=2019-09-10T12:40:08.078Z`;
 
 export default ({ getPageObjects, getService }: FtrProviderContext) => {
   const { uptime, common } = getPageObjects(['uptime', 'common']);
@@ -17,29 +18,21 @@ export default ({ getPageObjects, getService }: FtrProviderContext) => {
 
   const testSubjects = getService('testSubjects');
 
-  // FLAKY: https://github.com/elastic/kibana/issues/57737
-  describe.skip('overview page', function () {
-    const DEFAULT_DATE_START = 'Sep 10, 2019 @ 12:40:08.078';
-    const DEFAULT_DATE_END = 'Sep 11, 2019 @ 19:40:08.078';
-
+  describe('overview page', function () {
     before(async () => {
       await esArchiver.loadIfNeeded(UPTIME_HEARTBEAT_DATA);
     });
 
     beforeEach(async () => {
-      await uptime.goToRoot();
-      await uptime.setDateRange(DEFAULT_DATE_START, DEFAULT_DATE_END);
+      await common.navigateToApp('uptime', {
+        search: DEFAULT_NAVIGATION_SEARCH,
+      });
 
       await uptime.resetFilters();
     });
 
-    it('loads and displays uptime data based on date range', async () => {
-      await uptime.goToUptimeOverviewAndLoadData(
-        DEFAULT_DATE_START,
-        DEFAULT_DATE_END,
-        'monitor-page-link-0000-intermittent'
-      );
-    });
+    it('loads and displays uptime data based on date range', () =>
+      uptime.pageHasExpectedIds(['0000-intermittent']));
 
     it('applies filters for multiple fields', async () => {
       await uptime.selectFilterItems({
@@ -62,38 +55,36 @@ export default ({ getPageObjects, getService }: FtrProviderContext) => {
     });
 
     it('pagination is cleared when filter criteria changes', async () => {
-      await uptime.changePage('next');
-      await retry.try(async () => {
-        await uptime.pageHasExpectedIds([
-          '0010-down',
-          '0011-up',
-          '0012-up',
-          '0013-up',
-          '0014-up',
-          '0015-intermittent',
-          '0016-up',
-          '0017-up',
-          '0018-up',
-          '0019-up',
-        ]);
+      await common.navigateToApp('uptime', {
+        search: `${DEFAULT_NAVIGATION_SEARCH}&pagination={"cursorDirection":"AFTER","sortOrder":"ASC","cursorKey":{"monitor_id":"0009-up"}}`,
       });
+      await uptime.pageHasExpectedIds([
+        '0010-down',
+        '0011-up',
+        '0012-up',
+        '0013-up',
+        '0014-up',
+        '0015-intermittent',
+        '0016-up',
+        '0017-up',
+        '0018-up',
+        '0019-up',
+      ]);
       // there should now be pagination data in the URL
       await uptime.pageUrlContains('pagination');
       await uptime.setStatusFilter('up');
-      await retry.try(async () => {
-        await uptime.pageHasExpectedIds([
-          '0000-intermittent',
-          '0001-up',
-          '0002-up',
-          '0003-up',
-          '0004-up',
-          '0005-up',
-          '0006-up',
-          '0007-up',
-          '0008-up',
-          '0009-up',
-        ]);
-      });
+      await uptime.pageHasExpectedIds([
+        '0000-intermittent',
+        '0001-up',
+        '0002-up',
+        '0003-up',
+        '0004-up',
+        '0005-up',
+        '0006-up',
+        '0007-up',
+        '0008-up',
+        '0009-up',
+      ]);
       // ensure that pagination is removed from the URL
       await uptime.pageUrlContains('pagination', false);
     });