mypy

gh-145376: Fix _cursesmodule.c build on FreeBSD/macOS (#145669) #19831

Job	Run time
Run mypy on Tools/check-c-api-docs	22s
Run mypy on Lib/test/libregrtest	20s
Run mypy on Tools/peg_generator	30s
Run mypy on Tools/cases_generator	21s
Run mypy on Lib/tomllib	17s
Run mypy on Tools/build	20s
Run mypy on Tools/jit	27s
Run mypy on Tools/clinic	18s
Run mypy on Lib/_pyrepl	36s
	3m 31s

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