Tests

Fix narrowing in comprehensions when the intersection is impossible #22623

Job	Run time
Test mypyc suite with 32-bit Python	12m 18s
Test suite with py315-ubuntu, mypyc-compiled	15m 34s
Parallel tests with py314-ubuntu, mypyc-compiled	30m 26s
mypyc runtime tests with py313-macos	6m 4s
Test suite with py312-ubuntu	10m 13s
Test suite with py314-windows-64	31m 40s
Type check our own code (py310-ubuntu)	1m 9s
Parallel tests with py314-ubuntu, interpreted	28m 6s
Test suite with py314t-ubuntu, mypyc-compiled	18m 17s
Type check our own code (py310-windows-64)	2m 6s
Test suite with py314-ubuntu, mypyc-compiled	15m 43s
Parallel tests with py314-windows-64, interpreted	11m 43s
Test suite with py313-ubuntu, mypyc-compiled	16m 9s
Formatting and code style with Black + ruff	2m 0s
Test suite with py311-ubuntu	9m 45s
mypyc runtime tests with py310-ubuntu	5m 55s
Test suite with py310-ubuntu, mypyc-compiled	16m 57s
	3h 54m 5s

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