Tests

Fix: internal error caused by the generic type alias with an unpacked list #20517

Job	Run time
Test mypyc suite with 32-bit Python	9m 20s
Test suite with py312-ubuntu	8m 55s
Parallel tests with py314-ubuntu, interpreted	15m 28s
mypyc runtime tests with py310-ubuntu	5m 40s
Formatting and code style with Black + ruff	1m 51s
Test suite with py310-ubuntu, mypyc-compiled	14m 57s
Test suite with py314t-ubuntu, mypyc-compiled	15m 27s
Parallel tests with py314-ubuntu, mypyc-compiled	15m 28s
Test suite with py311-ubuntu	8m 51s
Test suite with py313-ubuntu, mypyc-compiled	13m 50s
mypyc runtime tests with py313-macos	6m 2s
Test suite with py314-windows-64	15m 23s
Type check our own code (py310-ubuntu)	1m 50s
Type check our own code (py310-windows-64)	2m 24s
Test suite with py314-ubuntu, mypyc-compiled	13m 40s
	2h 29m 6s

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