Tests

Fix crash on invalid recursive variadic alias #22475

Job	Run time
Test mypyc suite with 32-bit Python	10m 51s
Test suite with py313-ubuntu, mypyc-compiled	16m 23s
Test suite with py310-ubuntu, mypyc-compiled	17m 25s
Test suite with py314-ubuntu, mypyc-compiled	15m 42s
Test suite with py312-ubuntu	10m 23s
Test suite with py314-windows-64	29m 16s
mypyc runtime tests with py313-macos	8m 40s
mypyc runtime tests with py310-ubuntu	7m 8s
Test suite with py314t-ubuntu, mypyc-compiled	17m 43s
Parallel tests with py314-ubuntu, interpreted	25m 57s
Test suite with py315-ubuntu, mypyc-compiled	16m 32s
Test suite with py311-ubuntu	9m 28s
Formatting and code style with Black + ruff	1m 57s
Type check our own code (py310-ubuntu)	1m 5s
Parallel tests with py314-ubuntu, mypyc-compiled	29m 9s
Type check our own code (py310-windows-64)	1m 59s
Parallel tests with py314-windows-64, interpreted	12m 41s
	3h 52m 19s

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