Fixed the issue with Black ignoring config file to tell it which file is being processed. (#3406)

[nlaburu]

Fixed the issue with Black ignoring config file to tell it which file is being processed. (#3406)

Add test for stdin-filename

[hsanson]

These paths need to also be escaped. Linter is failing on Windows because of this:

  (5/7) [EXECUTE] Pipenv is detected when python_black_auto_pipenv is set
    (5/7) [EXECUTE] (X) {'command': 'pipenv run black --stdin-filename C:\testplugin\test\test-files\python\pipenv\whatever.py -'} should be equal to {'command': 'pipenv run black --stdin-filename ''/testplugin/test/test-files/python/pipenv/whatever.py'' -'}
    (6/7) [EXECUTE] Poetry is detected when python_black_auto_poetry is set
    (6/7) [EXECUTE] (X) {'command': 'poetry run black --stdin-filename C:\testplugin\test\test-files\python\poetry\whatever.py -'} should be equal to {'command': 'poetry run black --stdin-filename ''/testplugin/test/test-files/python/poetry/whatever.py'' -'}
    (7/7) [EXECUTE] uv is detected when python_black_auto_uv is set
    (7/7) [EXECUTE] (X) {'command': 'uv run black --stdin-filename C:\testplugin\test\test-files\python\uv\whatever.py -'} should be equal to {'command': 'uv run black --stdin-filename ''/testplugin/test/test-files/python/uv/