mypy

GH-148560: Don't emit unwind info for JIT stencils #20773

Job	Run time
Run mypy on Tools/clinic	18s
Run mypy on Lib/test/libregrtest	22s
Run mypy on Tools/check-c-api-docs	16s
Run mypy on Lib/_pyrepl	17s
Run mypy on Tools/cases_generator	17s
Run mypy on Lib/tomllib	18s
Run mypy on Tools/peg_generator	19s
Run mypy on Tools/jit	19s
Run mypy on Tools/build	15s
	2m 41s

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