Community fixes for the docs-test runner.
- Python examples run on Windows: the runner picks `.venv/Scripts/python.exe` and reports a missing venv as a failed test (#1487).
- TypeScript examples exit 1 when `main()` rejects, so broken examples no longer count as passed (#1495).
Co-Authored-By: abhinav7x94 <204053250+abhinav7x94@users.noreply.github.com>