[CI] ActiveDirectoryRunAsIT class failing

[elasticsearchmachine]

Build Scans:

• elasticsearch-periodic-platform-support #9258 / ubuntu-2404-aarch64_checkpart2_platform-support-arm
• elasticsearch-pull-request #78615 / part-2
• elasticsearch-periodic #9097 / encryption-at-rest
• elasticsearch-periodic-platform-support #9111 / almalinux-9_platform-support-unix
• elasticsearch-periodic-platform-support #9111 / ubuntu-2004_platform-support-unix
• elasticsearch-periodic #9097 / concurrent-search-tests
• elasticsearch-periodic-platform-support #9111 / rhel-7_platform-support-unix
• elasticsearch-periodic-platform-support #9111 / ubuntu-1804_platform-support-unix
• elasticsearch-periodic-platform-support #9111 / oraclelinux-8_platform-support-unix
• elasticsearch-periodic-platform-support #9111 / rocky-8_platform-support-unix

Reproduction Line:

undefined

Applicable branches:
8.18

Reproduces locally?:
N/A

Failure History:
See dashboard

Failure Message:

undefined

Issue Reasons:

• [8.18] 22 failures in class org.elasticsearch.xpack.security.authc.ldap.ActiveDirectoryRunAsIT (2.9% fail rate in 768 executions)
• [8.18] 2 failures in step part-2 (10.5% fail rate in 19 executions)
• [8.18] 2 failures in pipeline elasticsearch-periodic-platform-support (9.1% fail rate in 22 executions)

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

[elasticsearchmachine]

Pinging @elastic/es-security (Team:Security)

[n1v0lg]

test failure but a whole suite so marking as medium risk

[slobodanadamovic]

This should be addressed by #129660.
I've raised a backport to 8.18:

• [8.18] Move docker image to registry to address flaky test (#129660) (#129878) #131178