mypy

gh-144295: Fix data race in dict method lookup and global load (gh-14… #19324

Job	Run time
Run mypy on Lib/test/libregrtest	20s
Run mypy on Lib/_pyrepl	23s
Run mypy on Tools/check-c-api-docs	19s
Run mypy on Tools/build	18s
Run mypy on Tools/jit	21s
Run mypy on Tools/peg_generator	20s
Run mypy on Tools/cases_generator	17s
Run mypy on Lib/tomllib	18s
Run mypy on Tools/clinic	19s
	2m 55s

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