* Python: Add coverage threshold gate for PR checks (#3392)
- Add python-check-coverage.py script to enforce coverage threshold on specific modules
- Modify python-test-coverage.yml to run coverage check after tests
- Initial enforced module: agent_framework_azure_ai at 85% threshold
- Other modules are reported for visibility but don't block merges
* Fail if module not found
* Force unit test job to run
* Comment 1
* Fix coverage check to use full package paths for submodule support
* Update report format