[CI] DotPrefixClientYamlTestSuiteIT class failing

[elasticsearchmachine]

Build Scans:

• elasticsearch-periodic-platform-support #8646 / windows-2025_checkpart1_platform-support-windows
• elasticsearch-periodic-platform-support #8640 / windows-2025_checkpart1_platform-support-windows
• elasticsearch-periodic-platform-support #8634 / windows-2025_checkpart1_platform-support-windows

Reproduction Line:

undefined

Applicable branches:
main

Reproduces locally?:
N/A

Failure History:
See dashboard

Failure Message:

undefined

Issue Reasons:

• [main] 3 consecutive failures in step windows-2025_checkpart1_platform-support-windows
• [main] 3 failures in class org.elasticsearch.validation.DotPrefixClientYamlTestSuiteIT (2.2% fail rate in 137 executions)
• [main] 3 failures in step windows-2025_checkpart1_platform-support-windows (75.0% fail rate in 4 executions)
• [main] 3 failures in pipeline elasticsearch-periodic-platform-support (75.0% fail rate in 4 executions)

Note:
This issue was created using new test triage automation. Please report issues or feedback to es-delivery.

[elasticsearchmachine]

Pinging @elastic/es-data-management (Team:Data Management)

[nielsbauman]

First build scan failed due to:

[2025-06-07T00:07:43,972][ERROR][process-output           ][[elasticsearch-keystore.bat-log-forwarder]] Error: Could not find or load main class org.elasticsearch.tools.java_version_checker.JavaVersionChecker

along with other failures.
Second failed due to:

[2025-06-04T18:15:20,256][ERROR][o.e.b.Elasticsearch      ] [test-cluster-1] fatal exception while booting Elasticsearch java.lang.IllegalArgumentException: Setting is not registered for key [xpack.ml.trained_models.adaptive_allocations.scale_to_zero_time]	
	at org.elasticsearch.server@9.1.0-SNAPSHOT/org.elasticsearch.common.settings.AbstractScopedSettings.addSettingsUpdateConsumer(AbstractScopedSettings.java:194)	
	at org.elasticsearch.server@9.1.0-SNAPSHOT/org.elasticsearch.common.settings.AbstractScopedSettings.addSettingsUpdateConsumer(AbstractScopedSettings.java:423)	
	at org.elasticsearch.ml@9.1.0-SNAPSHOT/org.elasticsearch.xpack.ml.inference.adaptiveallocations.AdaptiveAllocationsScalerService.<init>(AdaptiveAllocationsScalerService.java:226)	
	at org.elasticsearch.ml@9.1.0-SNAPSHOT/org.elasticsearch.xpack.ml.MachineLearning.createComponents(MachineLearning.java:1341)

and was caused by changes in the PR itself.

Closing as unrelated.