mypy

GH-142718: JIT: Fix crash due to incorrect caching on side exits when… #18542

Job	Run time
Run mypy on Tools/clinic	17s
Run mypy on Lib/_pyrepl	20s
Run mypy on Tools/build	16s
Run mypy on Tools/jit	16s
Run mypy on Tools/cases_generator	20s
Run mypy on Lib/test/libregrtest	18s
Run mypy on Tools/peg_generator	22s
Run mypy on Lib/tomllib	18s
	2m 27s

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