mypy

gh-142913: Add test case for interpreter generator w/ overridden opcodes #18660

Job	Run time
Run mypy on Lib/test/libregrtest	18s
Run mypy on Tools/cases_generator	18s
Run mypy on Lib/tomllib	16s
Run mypy on Tools/check-c-api-docs	16s
Run mypy on Tools/peg_generator	16s
Run mypy on Tools/build	20s
Run mypy on Lib/_pyrepl	23s
Run mypy on Tools/clinic	17s
Run mypy on Tools/jit	19s
	2m 43s

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