Tests

Fix regression involving dict or on recursive dict #21498

Job	Run time
Test mypyc suite with 32-bit Python	1m 40s
Test suite with py310-ubuntu, mypyc-compiled	1m 53s
Test suite with py311-ubuntu	1m 52s
Test suite with py314-ubuntu, mypyc-compiled	1m 54s
Test suite with py314t-ubuntu, mypyc-compiled	1m 53s
Test suite with py313-ubuntu, mypyc-compiled	1m 52s
Test suite with py312-ubuntu	1m 54s
Test suite with py314-windows-64	1m 47s
Parallel tests with py314-windows-64, interpreted	1m 44s
mypyc runtime tests with py310-ubuntu	1m 53s
Type check our own code (py310-ubuntu)	1m 37s
Parallel tests with py314-ubuntu, mypyc-compiled	1m 55s
Type check our own code (py310-windows-64)	1m 49s
Formatting and code style with Black + ruff	1m 54s
mypyc runtime tests with py313-macos	1m 56s
Parallel tests with py314-ubuntu, interpreted	1m 54s
	29m 27s

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