mypy

Use `soft-deprecated` in more places (#148769) #20805

Job	Run time
Run mypy on Lib/tomllib	16s
Run mypy on Tools/jit	18s
Run mypy on Tools/clinic	21s
Run mypy on Tools/build	19s
Run mypy on Tools/check-c-api-docs	18s
Run mypy on Tools/peg_generator	24s
Run mypy on Lib/test/libregrtest	18s
Run mypy on Tools/cases_generator	20s
Run mypy on Lib/_pyrepl	21s
	2m 55s

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