[CI] PolicyManagerTests testGetEntitlementsThrowsOnMissingPluginUnnamedModule failing

[elasticsearchmachine]

Build Scans:

• elasticsearch-periodic-platform-support #6455 / windows-2019_checkpart1_platform-support-windows
• elasticsearch-periodic-platform-support #6455 / windows-2022_checkpart1_platform-support-windows

Reproduction Line:

gradlew ":libs:entitlement:test" --tests "org.elasticsearch.entitlement.runtime.policy.PolicyManagerTests.testGetEntitlementsResultIsCached" -Dtests.seed=C15722891840FE0B -Dtests.locale=ff-Latn-NG -Dtests.timezone=Europe/Madrid -Druntime.java=23

Applicable branches:
8.x

Reproduces locally?:
N/A

Failure History:
See dashboard

Failure Message:

java.lang.AssertionError: null

Issue Reasons:

• [8.x] 2 failures in test testGetEntitlementsThrowsOnMissingPluginUnnamedModule (1.5% fail rate in 132 executions)

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

[elasticsearchmachine]

Pinging @elastic/es-core-infra (Team:Core/Infra)

[ldematte]

Duplicate of #122666