mypy

gh-140875: Fix handling of unclosed charrefs before EOF in HTMLParser… #18043

Job	Run time
Run mypy on Lib/test/libregrtest	22s
Run mypy on Lib/_pyrepl	18s
Run mypy on Tools/cases_generator	20s
Run mypy on Tools/jit	23s
Run mypy on Tools/clinic	20s
Run mypy on Lib/tomllib	18s
Run mypy on Tools/build	19s
Run mypy on Tools/peg_generator	22s
	2m 42s

Provide feedback