Tests

[mypyc] Borrow final attributes more aggressively #22692

Job	Run time
Test mypyc suite with 32-bit Python	11m 48s
Test suite with py310-ubuntu, mypyc-compiled	17m 1s
Test suite with py312-ubuntu	10m 28s
Parallel tests with py314-ubuntu, interpreted	26m 55s
Test suite with py313-ubuntu, mypyc-compiled	17m 55s
Parallel tests with py314-windows-64, interpreted	12m 45s
Test suite with py314-ubuntu, mypyc-compiled	18m 3s
Test suite with py314t-ubuntu, mypyc-compiled	18m 8s
Test suite with py315-ubuntu, mypyc-compiled	16m 14s
mypyc runtime tests with py310-ubuntu	8m 3s
Test suite with py311-ubuntu	11m 5s
mypyc runtime tests with py313-macos	7m 0s
Test suite with py314-windows-64	37m 43s
Parallel tests with py314-ubuntu, mypyc-compiled	32m 8s
Formatting and code style with Black + ruff	2m 6s
Type check our own code (py310-ubuntu)	1m 8s
Type check our own code (py310-windows-64)	2m 14s
	4h 10m 44s

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