[8.x] Skip serverless AI assistant knowledge base status tests on MKI (…

…#205678) (#205703)

# Backport

This will backport the following commits from `main` to `8.x`:
- [Skip serverless AI assistant knowledge base status tests on MKI
(#205678)](#205678)

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

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

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serverless AI assistant knowledge base status tests on MKI
(#205678)\n\n## Summary\r\n\r\nThis PR skips the serverless API
integration tests for Observability AI\r\nassistant knowledge base
status for MKI runs.\r\n\r\nDetails in
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serverless AI assistant knowledge base status tests on
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serverless AI assistant knowledge base status tests on MKI
(#205678)\n\n## Summary\r\n\r\nThis PR skips the serverless API
integration tests for Observability AI\r\nassistant knowledge base
status for MKI runs.\r\n\r\nDetails in
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serverless AI assistant knowledge base status tests on MKI
(#205678)\n\n## Summary\r\n\r\nThis PR skips the serverless API
integration tests for Observability AI\r\nassistant knowledge base
status for MKI runs.\r\n\r\nDetails in
#205677","sha":"7e82712ab9ccaf07dfd1f3118a955eef1b089f55"}},{"branch":"8.x","label":"v8.18.0","branchLabelMappingKey":"^v8.18.0$","isSourceBranch":false,"state":"NOT_CREATED"}]}]
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Co-authored-by: Robert Oskamp <[email protected]>

x-pack/test_serverless/api_integration/test_suites/observability/ai_assistant/tests/knowledge_base/knowledge_base_status.spec.ts

@@ -24,6 +24,9 @@ export default function ApiTest({ getService }: FtrProviderContext) {
   const observabilityAIAssistantAPIClient = getService('observabilityAIAssistantAPIClient');
 
   describe('/internal/observability_ai_assistant/kb/status', function () {
+    // Fails on MKI: https://github.com/elastic/kibana/issues/205677
+    this.tags(['failsOnMKI']);
+
     before(async () => {
       await createKnowledgeBaseModel(ml);
       await observabilityAIAssistantAPIClient