mypy

gh-140131: Fix REPL cursor position on Windows when module completion… #19910

Job	Run time
Run mypy on Lib/test/libregrtest	17s
Run mypy on Lib/tomllib	19s
Run mypy on Tools/cases_generator	18s
Run mypy on Lib/_pyrepl	19s
Run mypy on Tools/peg_generator	19s
Run mypy on Tools/build	17s
Run mypy on Tools/jit	24s
Run mypy on Tools/check-c-api-docs	19s
Run mypy on Tools/clinic	23s
	2m 55s

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