[CI] TimeSeriesLifecycleActionsIT testFullPolicy failing

[elasticsearchmachine]

Build Scans:

• elasticsearch-periodic-platform-support #8808 / rhel-8_platform-support-unix
• elasticsearch-periodic-platform-support #8808 / windows-2025_checkpart5_platform-support-windows
• elasticsearch-pull-request #75817 / part-5

Reproduction Line:

./gradlew ":x-pack:plugin:ilm:qa:multi-node:javaRestTest" --tests "org.elasticsearch.xpack.ilm.TimeSeriesLifecycleActionsIT.testFullPolicy" -Dtests.seed=E4390D737DBD248C -Dtests.locale=bez -Dtests.timezone=Europe/Moscow -Druntime.java=24

Applicable branches:
main

Reproduces locally?:
N/A

Failure History:
See dashboard

Failure Message:

java.lang.AssertionError: timed out waiting for green state for index [index-migpgbxbyt-000001] cluster state [{
  "cluster_name" : "javaRestTest",
  "cluster_uuid" : "dNiRmH-mSzyvnohuDnWuIg",
  "version" : 1237,
  "state_uuid" : "XvX1DzzKQdGDcpI1hO__ig",
  "master_node" : "ATNIsdaWQXu6UKPbZmaosQ",
  "blocks" : { },
  "nodes" : {
    "Xc1IxlHUTEG8gjS-k3eXGw" : {
      "name" : "javaRestTest-3",
      "ephemeral_id" : "75Xq5oQUSx-HvmrMUUkvhw",
      "transport_address" : "127.0.0.1:43203",
      "external_id" : "javaRestTest-3",
      "attributes" : {
        "ml.config_version" : "12.0.0",
        "testattr" : "test",
        "transform.config_version" : "10.0.0",
        "xpack.installed" : "true"
      },
      "roles" : [
        "data",
        "data_cold",
        "data_content",
        "data_frozen",
        "data_hot",
        "data_warm",
        "ingest",
        "master",
        "ml",
        "remote_cluster_client",
        "transform"
      ],
      "version" : "9.1.0",
 
[truncated]

Issue Reasons:

• [main] 3 failures in test testFullPolicy (1.5% fail rate in 202 executions)

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

[elasticsearchmachine]

This has been muted on branch main

Mute Reasons:

• [main] 2 failures in test testFullPolicy (1.0% fail rate in 198 executions)

Build Scans:

• elasticsearch-periodic-platform-support #8808 / windows-2025_checkpart5_platform-support-windows
• elasticsearch-pull-request #75817 / part-5

[elasticsearchmachine]

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

[nielsbauman]

See #129489 (comment)