[CI] FullClusterRestartSystemIndexCompatibilityIT class failing

[elasticsearchmachine]

Build Scans:

• elasticsearch-periodic-platform-support #8729 / windows-2025_checkpart1_platform-support-windows
• elasticsearch-periodic-platform-support #8705 / windows-2022_checkpart1_platform-support-windows

Reproduction Line:

undefined

Applicable branches:
9.0

Reproduces locally?:
N/A

Failure History:
See dashboard

Failure Message:

undefined

Issue Reasons:

• [9.0] 2 failures in class org.elasticsearch.lucene.FullClusterRestartSystemIndexCompatibilityIT (1.7% fail rate in 116 executions)
• [9.0] 2 failures in pipeline elasticsearch-periodic-platform-support (40.0% fail rate in 5 executions)

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

[elasticsearchmachine]

Pinging @elastic/es-search-foundations (Team:Search Foundations)