mypy

gh-131798: Optimize `_ITER_CHECK_RANGE` and `_ITER_CHECK_LIST` in the… #20000

Job	Run time
Run mypy on Lib/test/libregrtest	20s
Run mypy on Tools/clinic	20s
Run mypy on Tools/jit	23s
Run mypy on Tools/cases_generator	17s
Run mypy on Tools/build	19s
Run mypy on Tools/peg_generator	2m 1s
Run mypy on Lib/tomllib	17s
Run mypy on Lib/_pyrepl	20s
Run mypy on Tools/check-c-api-docs	17s
	4m 34s

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