Tests

Fix/semanal nested class scope #19658

Job	Run time
Test mypyc suite with 32-bit Python	1m 30s
Test suite with py314t-ubuntu, mypyc-compiled	39s
mypyc runtime tests with py313-macos	3s
Test suite with py313-ubuntu, mypyc-compiled	35s
Parallel tests with py314-ubuntu, interpreted	1m 39s
Test suite with py314-windows-64	1m 32s
Test suite with py312-ubuntu	1m 40s
Test suite with py314-ubuntu, mypyc-compiled	35s
Test suite with py310-ubuntu, mypyc-compiled	29s
Test suite with py311-ubuntu	1m 40s
Type check our own code (py310-ubuntu)	45s
Type check our own code (py310-windows-64)	1m 21s
Formatting and code style with Black + ruff	1m 43s
Parallel tests with py314-ubuntu, mypyc-compiled	31s
mypyc runtime tests with py310-ubuntu	58s
	15m 40s

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