Tests

Fix various bugs in TypeVarTuples with defaults (#21544) #22429

Job	Run time
Test mypyc suite with 32-bit Python	10m 52s
Test suite with py310-ubuntu, mypyc-compiled	17m 43s
Parallel tests with py314-ubuntu, mypyc-compiled	29m 43s
Test suite with py314-windows-64	29m 22s
Type check our own code (py310-windows-64)	1m 46s
Test suite with py313-ubuntu, mypyc-compiled	16m 16s
Test suite with py312-ubuntu	10m 12s
mypyc runtime tests with py310-ubuntu	7m 8s
Type check our own code (py310-ubuntu)	1m 6s
Parallel tests with py314-windows-64, interpreted	9m 39s
Parallel tests with py314-ubuntu, interpreted	28m 27s
Test suite with py314-ubuntu, mypyc-compiled	16m 9s
Formatting and code style with Black + ruff	1m 54s
Test suite with py311-ubuntu	9m 33s
Test suite with py314t-ubuntu, mypyc-compiled	18m 36s
Test suite with py315-ubuntu, mypyc-compiled	16m 43s
mypyc runtime tests with py313-macos	5m 38s
	3h 50m 47s

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