Tests

Fix regression in dataclass narrowing for Python >= 3.13 #22628

Job	Run time
Test mypyc suite with 32-bit Python	12m 33s
Test suite with py313-ubuntu, mypyc-compiled	15m 22s
Test suite with py310-ubuntu, mypyc-compiled	16m 31s
Test suite with py314t-ubuntu, mypyc-compiled	17m 45s
mypyc runtime tests with py313-macos	6m 52s
Type check our own code (py310-windows-64)	1m 50s
Parallel tests with py314-ubuntu, mypyc-compiled	28m 31s
Formatting and code style with Black + ruff	2m 3s
Parallel tests with py314-ubuntu, interpreted	26m 30s
Test suite with py312-ubuntu	10m 10s
Parallel tests with py314-windows-64, interpreted	12m 22s
Test suite with py315-ubuntu, mypyc-compiled	15m 51s
Test suite with py311-ubuntu	9m 38s
mypyc runtime tests with py310-ubuntu	7m 16s
Type check our own code (py310-ubuntu)	1m 12s
Test suite with py314-ubuntu, mypyc-compiled	15m 44s
Test suite with py314-windows-64	20m 48s
	3h 40m 58s

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