Record maxtext & post-training requirements commit ids to CI workflow

[SurbhiJainUSC]

Description

• Record maxtext & post-training requirements commit ids to CI workflow
• Update RL documentation to use the commit ids from Github CI workflow

Tests

CI tests
https://screenshot.googleplex.com/3oGevk87kKJPhmQ

Checklist

Before submitting this PR, please make sure (put X in square brackets):

• I have performed a self-review of my code. For an optional AI review, add the gemini-review label.
• I have necessary comments in my code, particularly in hard-to-understand areas.
• I have run end-to-end tests tests and provided workload links above if applicable.
• I have made or will make corresponding changes to the doc if needed, including adding new documentation pages to the relevant Table of Contents (toctree directive) as explained in our documentation.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

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[github-actions]

🤖 Hi @SurbhiJainUSC, I've received your request, and I'm working on it now! You can track my progress in the logs for more details.

[github-actions]

📋 Review Summary

This Pull Request effectively introduces the recording of maxtext and post-training dependency commit IDs into the CI workflows, and updates the relevant RL documentation to guide users on how to retrieve these commit IDs for consistent environment setup. The changes improve the reproducibility of RL experiments.

🔍 General Feedback

• The workflow changes are well-implemented, ensuring the maxtext_sha is propagated correctly across dependent jobs.
• The documentation updates significantly enhance clarity by providing explicit instructions on how to obtain compatible commit IDs from CI runs.
• Consider reviewing the markdown line wrapping in the documentation for slightly improved flow and readability in certain sections, as noted in the inline comments.

[A9isha]

Thank you Surbhi!

[khatwanimohit]

LGTM! left a nit