Tests

Fix skipped imports considered stale #22573

Job	Run time
Test mypyc suite with 32-bit Python	12m 26s
Type check our own code (py310-ubuntu)	1m 11s
Test suite with py315-ubuntu, mypyc-compiled	16m 25s
Test suite with py313-ubuntu, mypyc-compiled	16m 41s
Test suite with py314t-ubuntu, mypyc-compiled	17m 20s
Test suite with py314-windows-64	32m 53s
Type check our own code (py310-windows-64)	1m 50s
Parallel tests with py314-windows-64, interpreted	10m 34s
Test suite with py314-ubuntu, mypyc-compiled	15m 18s
mypyc runtime tests with py313-macos	7m 51s
Test suite with py310-ubuntu, mypyc-compiled	17m 46s
Parallel tests with py314-ubuntu, mypyc-compiled	28m 2s
Parallel tests with py314-ubuntu, interpreted	25m 52s
Formatting and code style with Black + ruff	2m 1s
Test suite with py311-ubuntu	9m 54s
mypyc runtime tests with py310-ubuntu	7m 37s
Test suite with py312-ubuntu	9m 52s
	3h 53m 33s

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