Tests

[mypyc] Borrow final attributes more aggressively #22693

Job	Run time
Test mypyc suite with 32-bit Python	13m 6s
Test suite with py313-ubuntu, mypyc-compiled	16m 25s
Parallel tests with py314-ubuntu, mypyc-compiled	28m 59s
Test suite with py314t-ubuntu, mypyc-compiled	18m 22s
Parallel tests with py314-ubuntu, interpreted	26m 4s
Test suite with py314-ubuntu, mypyc-compiled	15m 51s
Parallel tests with py314-windows-64, interpreted	13m 7s
Test suite with py315-ubuntu, mypyc-compiled	16m 11s
mypyc runtime tests with py313-macos	9m 32s
Type check our own code (py310-windows-64)	2m 13s
mypyc runtime tests with py310-ubuntu	8m 38s
Test suite with py314-windows-64	31m 40s
Type check our own code (py310-ubuntu)	1m 16s
Test suite with py310-ubuntu, mypyc-compiled	17m 0s
Formatting and code style with Black + ruff	3m 19s
Test suite with py312-ubuntu	10m 37s
Test suite with py311-ubuntu	9m 52s
	4h 2m 12s

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