mypy

gh-142913: Add test case for interpreter generator w/ overridden opcodes #18643

Job	Run time
Run mypy on Tools/cases_generator	16s
Run mypy on Tools/build	18s
Run mypy on Lib/test/libregrtest	18s
Run mypy on Lib/_pyrepl	20s
Run mypy on Tools/peg_generator	18s
Run mypy on Tools/clinic	19s
Run mypy on Lib/tomllib	18s
Run mypy on Tools/jit	23s
Run mypy on Tools/check-c-api-docs	17s
	2m 47s

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