Tests

fix: isinstance narrowing regression with dynamic tuple argument #21606

Job	Run time
Test mypyc suite with 32-bit Python	10m 38s
Test suite with py314-ubuntu, mypyc-compiled	15m 31s
Formatting and code style with Black + ruff	1m 58s
Parallel tests with py314-ubuntu, interpreted	22m 14s
Test suite with py313-ubuntu, mypyc-compiled	15m 8s
Test suite with py311-ubuntu	9m 10s
mypyc runtime tests with py310-ubuntu	6m 24s
Test suite with py314-windows-64	24m 50s
mypyc runtime tests with py313-macos	6m 6s
Parallel tests with py314-windows-64, interpreted	10m 12s
Type check our own code (py310-windows-64)	2m 23s
Type check our own code (py310-ubuntu)	1m 36s
Test suite with py314t-ubuntu, mypyc-compiled	19m 49s
Test suite with py310-ubuntu, mypyc-compiled	16m 24s
Test suite with py312-ubuntu	9m 10s
Parallel tests with py314-ubuntu, mypyc-compiled	26m 2s
	3h 17m 35s

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