Tests

Better narrowing for enums and other types with known equality #21832

Job	Run time
Test mypyc suite with 32-bit Python	9m 48s
Test suite with py314-ubuntu, mypyc-compiled	12m 30s
Test suite with py311-ubuntu	9m 9s
Test suite with py312-ubuntu	9m 15s
Test suite with py310-ubuntu, mypyc-compiled	12m 31s
Test suite with py314-windows-64	12m 24s
mypyc runtime tests with py310-ubuntu	6m 53s
Parallel tests with py314-ubuntu, mypyc-compiled	12m 30s
Parallel tests with py314-ubuntu, interpreted	12m 30s
Parallel tests with py314-windows-64, interpreted	8m 2s
Type check our own code (py310-ubuntu)	1m 7s
Test suite with py314t-ubuntu, mypyc-compiled	12m 49s
Type check our own code (py310-windows-64)	1m 51s
Formatting and code style with Black + ruff	1m 55s
mypyc runtime tests with py313-macos	4m 48s
Test suite with py313-ubuntu, mypyc-compiled	12m 29s
	2h 20m 31s

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