mypy

GH-145667: Merge `GET_ITER` and `GET_YIELD_FROM_ITER` #20015

Job	Run time
Run mypy on Lib/test/libregrtest	20s
Run mypy on Lib/_pyrepl	1m 17s
Run mypy on Tools/cases_generator	19s
Run mypy on Tools/build	20s
Run mypy on Tools/check-c-api-docs	17s
Run mypy on Tools/jit	51s
Run mypy on Tools/peg_generator	18s
Run mypy on Lib/tomllib	17s
Run mypy on Tools/clinic	21s
	4m 20s

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