[Security AI Assistant][8.19] Fix Elastic Managed LLM connector missing from AI Settings connector dropdown

[jonwalstedt]

Summary

Fixes the Elastic Managed LLM connector not appearing in the Security → Security AI Settings → Connectors dropdown on 8.19.x deployments.

Root cause

useLoadConnectors filters connectors by actionTypes, a module-level array initialised to ['.bedrock', '.gen-ai', '.gemini']. The .inference action type (used by the Elastic Managed LLM preconfigured connector) is only appended to that array when inferenceEnabled: true is passed as a prop.

SearchAILakeConfigurationsSettingsManagement was calling the hook without that flag, so the connector was silently excluded before even reaching the isInferenceEndpointExists check.

The Observability AI Assistant is unaffected because it uses a completely different hook (useGenAIConnectors) that has no actionTypes gate.

Fix

Pass inferenceEnabled: true to useLoadConnectors in the Security AI Settings component — matching what use_chat_complete.ts and evaluation_settings.tsx already do.

Verification

Confirmed on a Cloud 8.19.x deployment:

• Before: GET /api/actions/connectors returns the Elastic Managed LLM connector (connector_type_id: ".inference") but the dropdown is empty
• After: connector appears in the Default AI Connector dropdown immediately

Test plan

• Deploy to a Cloud 8.19.x environment with EIS enabled (Elastic Managed LLM preconfigured connector present)
• Navigate to Security → Security AI Settings → Connectors tab
• Confirm "Elastic Managed LLM" appears in the Default AI Connector dropdown without any workaround

🤖 Generated with Claude Code

[infra-vault-gh-plugin-prod]

Pinging @elastic/security-threat-hunting (Team:Threat Hunting)

[kibanamachine]

💛 Build succeeded, but was flaky

• Buildkite Build
• Commit: 71e82fa

Failed CI Steps

• FTR Configs #85

Test Failures

• [job] [logs] FTR Configs #85 / Home page feature controls security global all privileges shows all available solutions

Metrics [docs]

Async chunks

Total size of all lazy-loaded chunks that will be downloaded as the user navigates the app

id	before	after	diff
securitySolution	9.5MB	9.5MB	+20.0B

Page load bundle

Size of the bundles that are downloaded on every page load. Target size is below 100kb

id	before	after	diff
kbnUiSharedDeps-srcJs	3.6MB	3.6MB	+127.0B

cc @jonwalstedt