mypy

gh-140936: Fix JIT assertion crash at finalization if some generator … #17903

Job	Run time
Run mypy on Lib/test/libregrtest	16s
Run mypy on Lib/_pyrepl	12s
Run mypy on Tools/build	22s
Run mypy on Tools/peg_generator	21s
Run mypy on Tools/clinic	18s
Run mypy on Tools/cases_generator	13s
Run mypy on Lib/tomllib	19s
Run mypy on Tools/jit	19s
	2m 20s

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