[CI] DocsClientYamlTestSuiteIT test {yaml=reference/rest-api/watcher/put-watch/line_126} failing

[elasticsearchmachine]

Build Scans:

• elasticsearch-periodic-platform-support #8924 / debian-11_platform-support-unix
• elasticsearch-periodic-platform-support #8846 / rhel-9_platform-support-unix
• elasticsearch-periodic #8819 / concurrent-search-tests

Reproduction Line:

./gradlew ":docs:yamlRestTest" --tests "org.elasticsearch.smoketest.DocsClientYamlTestSuiteIT.test {yaml=reference/rest-api/watcher/put-watch/line_126}" -Dtests.seed=C360ACF9FF3D0380 -Dtests.locale=gu -Dtests.timezone=America/Ciudad_Juarez -Druntime.java=23

Applicable branches:
8.17

Reproduces locally?:
N/A

Failure History:
See dashboard

Failure Message:

org.elasticsearch.client.WarningFailureException: method [DELETE], host [http://127.0.0.1:44041], URI [*,-.ds-ilm-history-*,-.ds-.slm-history-*,-.ds-.watcher-history-*?expand_wildcards=open%2Cclosed%2Chidden], status line [HTTP/1.1 200 OK]
Warnings: [this request accesses system indices: [.triggered_watches], but in a future major version, direct access to system indices will be prevented by default]
{"acknowledged":true}

Issue Reasons:

• [8.17] 3 failures in test test {yaml=reference/rest-api/watcher/put-watch/line_126} (0.6% fail rate in 500 executions)
• [8.17] 2 failures in pipeline elasticsearch-periodic-platform-support (12.5% fail rate in 16 executions)

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

[elasticsearchmachine]

Pinging @elastic/es-delivery (Team:Delivery)

[elasticsearchmachine]

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

[masseyke]

Unless someone knows how to suppress warnings in doc tests, this one doesn't seem worth digging into too much since these tests no longer even exist in newer versions.