[9.1] Fix - Failing test: Chrome X-Pack Observability UI Functional Tests.x-pack/test/observability_functional/apps/observability/pages/alerts/index·ts - ObservabilityApp Observability alerts > Alerts table Filtering Autocompletion works (#226408) (#226457)

# Backport

This will backport the following commits from `main` to `9.1`:
- [Fix - Failing test: Chrome X-Pack Observability UI Functional
Tests.x-pack/test/observability_functional/apps/observability/pages/alerts/index·ts
- ObservabilityApp Observability alerts > Alerts table Filtering
Autocompletion works
(#226408)](#226408)

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

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

<!--BACKPORT [{"author":{"name":"Faisal
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- Failing test: Chrome X-Pack Observability UI Functional
Tests.x-pack/test/observability_functional/apps/observability/pages/alerts/index·ts
- ObservabilityApp Observability alerts > Alerts table Filtering
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- Failing test: Chrome X-Pack Observability UI Functional
Tests.x-pack/test/observability_functional/apps/observability/pages/alerts/index·ts
- ObservabilityApp Observability alerts > Alerts table Filtering
Autocompletion
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- Failing test: Chrome X-Pack Observability UI Functional
Tests.x-pack/test/observability_functional/apps/observability/pages/alerts/index·ts
- ObservabilityApp Observability alerts > Alerts table Filtering
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- Failing test: Chrome X-Pack Observability UI Functional
Tests.x-pack/test/observability_functional/apps/observability/pages/alerts/index·ts
- ObservabilityApp Observability alerts > Alerts table Filtering
Autocompletion works (#226408)\n\n## Summary\n\nIt fixes
#217739","sha":"64c37072b5938d9c101638d3c199ca089d335dd3"}}]}]
BACKPORT-->

Co-authored-by: Faisal Kanout <[email protected]>

Author: kibanamachine

x-pack/test/observability_functional/apps/observability/pages/alerts/index.ts

@@ -76,9 +76,7 @@ export default ({ getService, getPageObjects }: FtrProviderContext) => {
     },
   };
 
-  // Failing: See https://github.com/elastic/kibana/issues/217739
-  // Failing: See https://github.com/elastic/kibana/issues/217739
-  describe.skip('Observability alerts >', function () {
+  describe('Observability alerts >', function () {
     this.tags('includeFirefox');
     const testSubjects = getService('testSubjects');
     const retry = getService('retry');
@@ -231,7 +229,7 @@ export default ({ getService, getPageObjects }: FtrProviderContext) => {
               const titleText = await (
                 await observability.alerts.common.getAlertsFlyoutTitle()
               ).getVisibleText();
-              expect(titleText).to.contain('APM Failed Transaction Rate (one)');
+              expect(titleText).to.contain('Failed transaction rate threshold breached');
             });
           });