Tests

Fix custom equality handling for membership narrowing in static conta… #22685

Job	Run time
Test mypyc suite with 32-bit Python	12m 2s
Test suite with py314-ubuntu, mypyc-compiled	16m 26s
Test suite with py310-ubuntu, mypyc-compiled	17m 10s
Test suite with py315-ubuntu, mypyc-compiled	15m 36s
Test suite with py314t-ubuntu, mypyc-compiled	18m 17s
Test suite with py311-ubuntu	9m 44s
Test suite with py314-windows-64	33m 53s
mypyc runtime tests with py313-macos	10m 5s
Test suite with py312-ubuntu	10m 26s
mypyc runtime tests with py310-ubuntu	7m 13s
Type check our own code (py310-ubuntu)	1m 13s
Parallel tests with py314-windows-64, interpreted	12m 19s
Formatting and code style with Black + ruff	1m 56s
Parallel tests with py314-ubuntu, interpreted	27m 18s
Parallel tests with py314-ubuntu, mypyc-compiled	28m 3s
Test suite with py313-ubuntu, mypyc-compiled	16m 42s
Type check our own code (py310-windows-64)	2m 54s
	4h 1m 17s

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