[8.19] [Obs AI Assistant] Unskip summarize tests (#218728) (#218734)

# Backport

This will backport the following commits from `main` to `8.19`:
- [[Obs AI Assistant] Unskip summarize tests
(#218728)](#218728)

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

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

<!--BACKPORT [{"author":{"name":"Viduni
Wickramarachchi","email":"[email protected]"},"sourceCommit":{"committedDate":"2025-04-21T16:07:54Z","message":"[Obs
AI Assistant] Unskip summarize tests (#218728)\n\nCloses
https://github.com/elastic/kibana/issues/218497\n\n## Summary\n\nThe
summarize tests were skipped last week because they were failing
and\nblocking pipelines.\n\nThese tests have started to fail after the
merge of\nhttps://github.com/elastic/elasticsearch/pull/126635\nThese
changes were reverted last week
in\nhttps://github.com/elastic/elasticsearch/pull/127075\n\nTherefore,
this PR unskips the tests.\n\n### Checklist\n\n- [x] The PR description
includes the appropriate Release Notes section,\nand the correct
`release_note:*` label is applied per
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AI Assistant] Unskip summarize tests (#218728)\n\nCloses
https://github.com/elastic/kibana/issues/218497\n\n## Summary\n\nThe
summarize tests were skipped last week because they were failing
and\nblocking pipelines.\n\nThese tests have started to fail after the
merge of\nhttps://github.com/elastic/elasticsearch/pull/126635\nThese
changes were reverted last week
in\nhttps://github.com/elastic/elasticsearch/pull/127075\n\nTherefore,
this PR unskips the tests.\n\n### Checklist\n\n- [x] The PR description
includes the appropriate Release Notes section,\nand the correct
`release_note:*` label is applied per
the\n[guidelines](https://www.elastic.co/guide/en/kibana/master/contributing.html#kibana-release-notes-process)","sha":"766cd471765c1466c4b12005e04ef39e5f5ed04b"}},"sourceBranch":"main","suggestedTargetBranches":["8.19"],"targetPullRequestStates":[{"branch":"main","label":"v9.1.0","branchLabelMappingKey":"^v9.1.0$","isSourceBranch":true,"state":"MERGED","url":"https://github.com/elastic/kibana/pull/218728","number":218728,"mergeCommit":{"message":"[Obs
AI Assistant] Unskip summarize tests (#218728)\n\nCloses
https://github.com/elastic/kibana/issues/218497\n\n## Summary\n\nThe
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and\nblocking pipelines.\n\nThese tests have started to fail after the
merge of\nhttps://github.com/elastic/elasticsearch/pull/126635\nThese
changes were reverted last week
in\nhttps://github.com/elastic/elasticsearch/pull/127075\n\nTherefore,
this PR unskips the tests.\n\n### Checklist\n\n- [x] The PR description
includes the appropriate Release Notes section,\nand the correct
`release_note:*` label is applied per
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BACKPORT-->

Co-authored-by: Viduni Wickramarachchi <[email protected]>

Author: kibanamachine

x-pack/test/api_integration/deployment_agnostic/apis/observability/ai_assistant/complete/functions/summarize.spec.ts

@@ -24,8 +24,7 @@ export default function ApiTest({ getService }: DeploymentAgnosticFtrProviderCon
   const es = getService('es');
   const observabilityAIAssistantAPIClient = getService('observabilityAIAssistantApi');
 
-  // Failing test: https://github.com/elastic/kibana/issues/218497
-  describe.skip('summarize', function () {
+  describe('summarize', function () {
     // Fails on MKI: https://github.com/elastic/kibana/issues/205581
     this.tags(['failsOnMKI']);
     let proxy: LlmProxy;

x-pack/test/observability_ai_assistant_functional/tests/knowledge_base_management/index.spec.ts

@@ -48,8 +48,7 @@ export default function ApiTest({ getService, getPageObjects }: FtrProviderConte
     }).expect(200);
   }
 
-  // Failing test: https://github.com/elastic/kibana/issues/218327
-  describe.skip('Knowledge management tab', () => {
+  describe('Knowledge management tab', () => {
     before(async () => {
       await clearKnowledgeBase(es);