Tests

fix: isinstance narrowing regression with dynamic tuple argument #21605

Job	Run time
Test mypyc suite with 32-bit Python	8m 48s
Test suite with py313-ubuntu, mypyc-compiled	8m 49s
Test suite with py310-ubuntu, mypyc-compiled	8m 48s
Parallel tests with py314-windows-64, interpreted	8m 38s
Test suite with py312-ubuntu	8m 48s
Test suite with py311-ubuntu	8m 48s
Type check our own code (py310-ubuntu)	1m 36s
mypyc runtime tests with py310-ubuntu	6m 26s
Formatting and code style with Black + ruff	1m 46s
Parallel tests with py314-ubuntu, interpreted	8m 50s
Parallel tests with py314-ubuntu, mypyc-compiled	8m 50s
Test suite with py314t-ubuntu, mypyc-compiled	8m 48s
Test suite with py314-windows-64	8m 45s
Type check our own code (py310-windows-64)	2m 27s
mypyc runtime tests with py313-macos	5m 31s
Test suite with py314-ubuntu, mypyc-compiled	8m 49s
	1h 54m 27s

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