Tests

[mypyc] Fix non-deterministic compiler output due to frozensets (#21631) #22561

Job	Run time
Test mypyc suite with 32-bit Python	11m 40s
Parallel tests with py314-windows-64, interpreted	11m 35s
Parallel tests with py314-ubuntu, mypyc-compiled	30m 7s
Formatting and code style with Black + ruff	1m 52s
mypyc runtime tests with py313-macos	8m 38s
Test suite with py314-ubuntu, mypyc-compiled	15m 49s
Test suite with py311-ubuntu	9m 37s
Test suite with py315-ubuntu, mypyc-compiled	16m 49s
Test suite with py314-windows-64	30m 26s
Test suite with py314t-ubuntu, mypyc-compiled	18m 5s
mypyc runtime tests with py310-ubuntu	7m 36s
Type check our own code (py310-ubuntu)	1m 5s
Parallel tests with py314-ubuntu, interpreted	27m 6s
Test suite with py310-ubuntu, mypyc-compiled	17m 21s
Test suite with py313-ubuntu, mypyc-compiled	16m 2s
Test suite with py312-ubuntu	10m 37s
Type check our own code (py310-windows-64)	1m 37s
	3h 56m 2s

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