Update TFX-bsl and TFMD version constraints in setup.py to its master and pinning Bazel version to 7.7.0

[vkarampudi]

Summary

This PR updates the tfx-bsl and tfmd dependency references to point to the official repository's master branch and introduces stability fixes to the GitHub Actions workflows to resolve Bazel and PIP build isolation conflicts.

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Key Changes

1. Dependency Cleanups (setup.py)

• Point tfx-bsl to Master: Reverted testing fork references and pointed the tfx-bsl and tfmd git references to the official tensorflow/tfx-bsl@master tensorflow/metadata@master branchs.
• URL Normalization: Cleaned up/normalized the dependency git URL format to prevent pip installation conflicts.

2. CI Workflow Stability Fixes (.github/workflows/)

• Bazel Version Pinning: Set USE_BAZEL_VERSION: 7.7.0 globally in both the ci-test.yml and wheels.yml environments. This prevents the runner from downloading incompatible newer versions of Bazel (e.g., 9.x) that cause build errors (such as name 'sh_binary' is not defined) during dependency compilation.

• Bypass Build Isolation Conflicts:

  • Added pre-installation of build-time dependencies (setuptools, wheel, numpy, and pyarrow) in the runner environment.
  • Updated the dependency installation steps to use --no-build-isolation (e.g., pip install --no-build-isolation .[test]).
  • Configured the package build step in the wheels workflow to run with --no-isolation (e.g., python -m build --no-isolation).

  Reasoning: This completely avoids PEP 517 isolated environment setups where pip-generated sitecustomize.py assertions (assert not path in sys.path) collide with environment PYTHONPATH variables forwarded by Bazel's sandboxed sub-shells.

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Verification & Status

• All pipeline builds and dependencies now compile successfully on all matrix runner environments.
• Workflows complete successfully (Green).