Tests

[mypyc] Borrow final attributes more aggressively #22681

Job	Run time
mypyc runtime tests with py310-ubuntu	7m 27s
Test mypyc suite with 32-bit Python	12m 2s
Formatting and code style with Black + ruff	1m 34s
Parallel tests with py314-windows-64, interpreted	10m 31s
Test suite with py314-ubuntu, mypyc-compiled	17m 16s
Parallel tests with py314-ubuntu, mypyc-compiled	31m 9s
Test suite with py310-ubuntu, mypyc-compiled	18m 6s
Parallel tests with py314-ubuntu, interpreted	27m 50s
Test suite with py314-windows-64	32m 58s
Test suite with py313-ubuntu, mypyc-compiled	17m 38s
mypyc runtime tests with py313-macos	6m 21s
Test suite with py314t-ubuntu, mypyc-compiled	19m 44s
Test suite with py311-ubuntu	10m 11s
Test suite with py312-ubuntu	10m 29s
Type check our own code (py310-ubuntu)	1m 6s
Type check our own code (py310-windows-64)	2m 0s
Test suite with py315-ubuntu, mypyc-compiled	17m 28s
	4h 3m 50s

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