mypy

gh-143040: Exit taychon live mode gracefully and display profiled scr… #18760

Job	Run time
Run mypy on Tools/jit	20s
Run mypy on Lib/_pyrepl	19s
Run mypy on Tools/build	19s
Run mypy on Lib/tomllib	16s
Run mypy on Lib/test/libregrtest	20s
Run mypy on Tools/check-c-api-docs	15s
Run mypy on Tools/cases_generator	19s
Run mypy on Tools/peg_generator	18s
Run mypy on Tools/clinic	20s
	2m 46s

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