mypy

GH-136410: Faster side exits #15944

Job	Run time
Run mypy on Tools/cases_generator	16s
Run mypy on Lib/_pyrepl	16s
Run mypy on Tools/clinic	14s
Run mypy on Lib/tomllib	16s
Run mypy on Tools/build	17s
Run mypy on Tools/peg_generator	14s
Run mypy on Tools/jit	15s
Run mypy on Lib/test/libregrtest	18s
	2m 6s

Provide feedback