Tests

Fix crash on invalid recursive variadic alias #22458

Job	Run time
Test mypyc suite with 32-bit Python	10m 49s
Test suite with py315-ubuntu, mypyc-compiled	16m 15s
mypyc runtime tests with py313-macos	5m 12s
Parallel tests with py314-ubuntu, interpreted	25m 23s
Test suite with py312-ubuntu	10m 1s
Test suite with py314-ubuntu, mypyc-compiled	16m 12s
Parallel tests with py314-ubuntu, mypyc-compiled	28m 37s
Test suite with py313-ubuntu, mypyc-compiled	16m 12s
Test suite with py314t-ubuntu, mypyc-compiled	18m 4s
Test suite with py314-windows-64	32m 46s
Test suite with py311-ubuntu	9m 30s
mypyc runtime tests with py310-ubuntu	7m 23s
Test suite with py310-ubuntu, mypyc-compiled	16m 55s
Type check our own code (py310-ubuntu)	1m 10s
Parallel tests with py314-windows-64, interpreted	9m 57s
Formatting and code style with Black + ruff	1m 50s
Type check our own code (py310-windows-64)	1m 49s
	3h 48m 5s

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