Add job to build and upload docker image to pypi_release workflow

[SurbhiJainUSC]

Description

• Revert Temporarily remove workflow prereq due to a known issue #3333 that temporarily remove the test run prereq for the PyPI release after fixing the issue
• Build and push MaxText stable docker images (pre-training and post-training) after a new PyPI version has been released. Also, tag the image with MAxText PyPI version.

Tests

• Tested the fix for the issue identified in PR Temporarily remove workflow prereq due to a known issue #3333: https://github.com/AI-Hypercomputer/maxtext/actions/runs/22924861319/job/66533075060?pr=3369
• Tested MaxText stable docker images build for latest pypi release: https://github.com/AI-Hypercomputer/maxtext/actions/runs/22925991031/job/66536370998?pr=3369

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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