Tests

Fix type variable with values as a supertype #22163

Job	Run time
Test mypyc suite with 32-bit Python	11m 35s
Test suite with py312-ubuntu	10m 11s
Test suite with py310-ubuntu, mypyc-compiled	16m 33s
Type check our own code (py310-windows-64)	1m 55s
mypyc runtime tests with py310-ubuntu	7m 20s
Formatting and code style with Black + ruff	2m 10s
Test suite with py314t-ubuntu, mypyc-compiled	17m 51s
Test suite with py314-ubuntu, mypyc-compiled	15m 56s
Type check our own code (py310-ubuntu)	1m 15s
Test suite with py311-ubuntu	9m 35s
Parallel tests with py314-windows-64, interpreted	16m 6s
Test suite with py313-ubuntu, mypyc-compiled	15m 32s
mypyc runtime tests with py313-macos	7m 28s
Parallel tests with py314-ubuntu, interpreted	25m 3s
Parallel tests with py314-ubuntu, mypyc-compiled	28m 44s
Test suite with py314-windows-64	31m 14s
	3h 38m 28s

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