Failing test: Observability AI Assistant API Integration tests.x-pack/test_serverless/api_integration/test_suites/observability/ai_assistant/tests/knowledge_base/knowledge_base_migration·spec·ts - Observability AI Assistant API tests knowledge_base/knowledge_base_migration.spec.ts When there are knowledge base entries (from 8.15 or earlier) that does not contain semantic_text embeddings "after all" hook in "When there are knowledge base entries (from 8.15 or earlier) that does not contain semantic_text embeddings"

[kibanamachine]

A test failed on a tracked branch

Error: Expected status code 200, got 404 with body '{"error":{"root_cause":[{"type":"resource_not_found_exception","reason":"Could not find trained model [pt_tiny_elser]"}],"type":"resource_not_found_exception","reason":"Could not find trained model [pt_tiny_elser]"},"status":404}'
    at Assertion.assert (expect.js:100:11)
    at Assertion.eql (expect.js:244:8)
    at Object.assertResponseStatusCode (api.ts:91:31)
    at Object.deleteTrainedModelES (api.ts:1593:12)
    at processTicksAndRejections (node:internal/process/task_queues:95:5)
    at deleteKnowledgeBaseModel (helpers.ts:32:3)
    at Context.<anonymous> (knowledge_base_migration.spec.ts:73:7)
    at Object.apply (wrap_function.js:74:16) {
  actual: '404',
  expected: '200',
  showDiff: true
}

First failure: kibana-on-merge - main

[elasticmachine]

Pinging @elastic/obs-ai-assistant (Team:Obs AI Assistant)

[emma-raffenne]

Same as #206475 where it will be addressed.