Avoid printing autoimport syntax errors

[yangfan-yf-yf]

Summary

When autoimport scans an invalid source file, get_names_from_file() prints the SyntaxError to standard output. On Windows consoles using GBK, a syntax error containing an unencodable character can raise UnicodeEncodeError in the worker process and interrupt cache generation.

This switches the diagnostic to the existing module logger at debug level. Invalid files continue to be skipped, without writing to standard output.

Validation

• Added a regression test for an invalid source file containing €; it verifies the file is skipped, the diagnostic is logged, and standard output stays empty.
• python -m pytest -q ropetest/contrib/autoimport/parsetest.py — 4 passed
• python -m pytest -q --deselect=ropetest/contrib/autoimporttest.py::AutoImportTest::test_generate_full_cache --deselect=ropetest/contrib/autoimporttest.py::AutoImportTest::test_skipping_directories_not_accessible_because_of_permission_error — 2090 passed, 8 skipped, 5 xfailed
• The two deselected autoimport tests fail unchanged on the Windows baseline because of console encoding and permission-fixture behavior.
• python -m pre_commit run --files rope/contrib/autoimport/parse.py ropetest/contrib/autoimport/parsetest.py

[lieryan]

Thanks for fixing this issue, the fix looks good to me @yangfan-yf-yf

@allcontributors please add @yangfan-yf-yf for code contribution

[allcontributors]

@lieryan

I've put up a pull request to add @yangfan-yf-yf! 🎉