mypy

gh-138122: fix AC warnings in `Modules/_remote_debugging/module.c` (#… #18767

Job	Run time
Run mypy on Lib/_pyrepl	17s
Run mypy on Tools/build	16s
Run mypy on Tools/check-c-api-docs	17s
Run mypy on Lib/test/libregrtest	18s
Run mypy on Tools/cases_generator	17s
Run mypy on Tools/peg_generator	17s
Run mypy on Lib/tomllib	20s
Run mypy on Tools/clinic	18s
Run mypy on Tools/jit	17s
	2m 37s

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