[jrmccluskey]

• Clean up remaining Python 3.10 references

• Apply batched suggestions from code review

---

[github-actions]

📋 Review Summary

This PR cleanly cherry-picks #40972 onto the release-2.78 branch to remove remaining references, container configurations, and test suites for Python 3.10. All changes across the Gradle build configurations, GitHub Actions workflows, release scripts, and documentation are consistent and accurate.

🔍 General Feedback

• The removal of Python 3.10 Gradle subprojects, container requirement files, and CI workflow references is thorough and aligns with setting python_requires = '>=3.11' in setup.py for Beam 2.78.0.
• No issues found.

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[codecov]

Codecov Report

❌ Patch coverage is 0% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 79.81%. Comparing base (3b59922) to head (6eb78c5).
⚠️ Report is 9 commits behind head on release-2.78.

Files with missing lines	Patch %	Lines
sdks/python/setup.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@                Coverage Diff                @@
##           release-2.78   #40987       +/-   ##
=================================================
+ Coverage              0   79.81%   +79.81%     
=================================================
  Files                 0      494      +494     
  Lines                 0    83574    +83574     
=================================================
+ Hits                  0    66707    +66707     
- Misses                0    16867    +16867     

Flag	Coverage Δ
python	79.81% <0.00%> (?)

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[Abacn]

website presubmit failed not related to the change, fixed on #40945