(🐞) error code that is enabled in the config file can't be disabled on the CLI (with `--disable-error-code`)

I think it would be intuitive for commandline arguments to override config file options, but the way that enable/disable-error-code works isn't.

pyproject.toml

[tool.mypy]
enable_error_code = "operator"

> mypy --disable-error-code operator -c "1 + ''"
test.py:1: error: Unsupported operand types for + ("int" and "str")  [operator]
Found 1 error in 1 file (checked 1 source file)

The docs specify how these flags interact with themselves, but don't mention the ones in the config file.

--enable-error-code
This flag allows enabling one or multiple error codes globally. See [Error codes](https://mypy.readthedocs.io/en/stable/error_codes.html#error-codes) for more information.

Note: This flag will override disabled error codes from the [--disable-error-code](https://mypy.readthedocs.io/en/stable/command_line.html#cmdoption-mypy-disable-error-code) flag.

まず、mypy が pyproject.toml の enable_error_code と disable_error_code をコマンドラインオプションとどのように組み合わせるかを追跡します。--disable-error-code operator を使って例を再現し、その後、設定と CLI の組み合わせをカバーするテストを追加します。CLI オプションが設定されたエラーコードを抑制し、ドキュメントでこの優先順位が説明されていれば完了です。