Tests

Fix error code of note about unbound type variable #22621

Job	Run time
Test mypyc suite with 32-bit Python	11m 1s
Test suite with py311-ubuntu	10m 3s
Test suite with py310-ubuntu, mypyc-compiled	17m 0s
Test suite with py314-ubuntu, mypyc-compiled	15m 33s
Test suite with py313-ubuntu, mypyc-compiled	16m 28s
Test suite with py314t-ubuntu, mypyc-compiled	18m 0s
Test suite with py312-ubuntu	10m 6s
Parallel tests with py314-ubuntu, mypyc-compiled	29m 50s
Type check our own code (py310-windows-64)	2m 5s
Type check our own code (py310-ubuntu)	1m 9s
mypyc runtime tests with py310-ubuntu	7m 35s
Formatting and code style with Black + ruff	1m 56s
Test suite with py315-ubuntu, mypyc-compiled	16m 15s
mypyc runtime tests with py313-macos	7m 34s
Test suite with py314-windows-64	32m 53s
Parallel tests with py314-ubuntu, interpreted	27m 32s
Parallel tests with py314-windows-64, interpreted	11m 12s
	3h 56m 12s

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