[ML] Yaml test that runs inference as a non-admin user

[davidkyle]

Adds a test for the fix in #128327

Run the test with this command

./gradlew :x-pack:plugin:inference:qa:inference-with-security:yamlRestTest 

Before #128327 the test would fail because the non admin users cannot call cluster:internal/xpack/inference:

Failed to execute phase [rank-feature], Computing updated ranks for results failed\n\t\t... 11 more\n\tCaused by: 

org.elasticsearch.ElasticsearchSecurityException: action [cluster:internal/xpack/inference] is unauthorized for user [inference_user] with effective roles [monitor_only_user], this action is granted by the cluster privileges [manage,all]

[elasticsearchmachine]

Pinging @elastic/ml-core (Team:ML)

[elasticsearchmachine]

💚 Backport successful

Status	Branch	Result
✅	8.19