mypy

gh-112821: Fix rlcompleter failures on objects with descriptors (#149… #10545

Job	Run time
Run mypy on Lib/test/libregrtest	40s
Run mypy on Tools/build	44s
Run mypy on Lib/_pyrepl	45s
Run mypy on Lib/tomllib	38s
Run mypy on Tools/clinic	39s
Run mypy on Tools/cases_generator	43s
Run mypy on Tools/peg_generator	44s
Run mypy on Tools/jit	42s
Run mypy on Tools/check-c-api-docs	41s
	6m 16s

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