Tests

Fix regression in dataclass narrowing for Python >= 3.13 #22627

Job	Run time
Test mypyc suite with 32-bit Python	12m 9s
Test suite with py314-ubuntu, mypyc-compiled	15m 16s
Test suite with py314t-ubuntu, mypyc-compiled	17m 52s
Test suite with py312-ubuntu	9m 59s
Test suite with py313-ubuntu, mypyc-compiled	16m 5s
mypyc runtime tests with py310-ubuntu	7m 41s
mypyc runtime tests with py313-macos	6m 10s
Parallel tests with py314-ubuntu, interpreted	27m 6s
Test suite with py311-ubuntu	9m 45s
Type check our own code (py310-ubuntu)	1m 15s
Parallel tests with py314-windows-64, interpreted	11m 23s
Test suite with py314-windows-64	32m 39s
Test suite with py315-ubuntu, mypyc-compiled	16m 30s
Type check our own code (py310-windows-64)	1m 56s
Formatting and code style with Black + ruff	1m 40s
Parallel tests with py314-ubuntu, mypyc-compiled	29m 50s
Test suite with py310-ubuntu, mypyc-compiled	16m 54s
	3h 54m 10s

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