[#28187] Add a Java gradle task to run validates runner tests on Prism.

[lostluck]

• Add a Java gradle task to run validates runner tests on Prism.
• Filtered to green tests. Added notes about what's broken with them, along with links to pertinent issues.
• Broken tests that will terminate are in the sickbay list, to separate data, from configuration.
• Add log_level filtering to prism. It was easier to have the Java PrismRunner wrapper re-launch the binary all the time. Set Java default to warning log. Can be overridden by a --prismLogLevel flag. Replaces the recently added --debug flag.
• Add a Gradle Action to run as Precommit.

Part of #28187

---

Thank you for your contribution! Follow this checklist to help us incorporate your contribution quickly and easily:

• Mention the appropriate issue in your description (for example: addresses #123), if applicable. This will automatically add a link to the pull request in the issue. If you would like the issue to automatically close on merging the pull request, comment fixes #<ISSUE NUMBER> instead.
• Update CHANGES.md with noteworthy changes.
• If this contribution is large, please file an Apache Individual Contributor License Agreement.

See the Contributor Guide for more tips on how to make review process smoother.

To check the build health, please visit https://github.com/apache/beam/blob/master/.test-infra/BUILD_STATUS.md

GitHub Actions Tests Status (on master branch)

See CI.md for more information about GitHub Actions CI or the workflows README to see a list of phrases to trigger workflows.

[lostluck]

R: @damondouglas

This should now be ready for review. The Github action was derived from the Flink PVR batch run, with a few unnecessary bits removed. It will be run once we merge this in.

I'll clean up the PreCommit, WsLint, and spotless once they come up.

[github-actions]

Stopping reviewer notifications for this pull request: review requested by someone other than the bot, ceding control. If you'd like to restart, comment assign set of reviewers

[damondouglas]

Just one small comment.

[lostluck]

Initial action run is here:

https://github.com/apache/beam/actions/runs/11507858474

All runs: https://github.com/apache/beam/actions/workflows/beam_PreCommit_Java_PVR_Prism_Loopback.yml