Tests

Fix stubtest false positive for properties with a deleter (#21259) #21796

Job	Run time
Test mypyc suite with 32-bit Python	10m 46s
Test suite with py313-ubuntu, mypyc-compiled	15m 22s
mypyc runtime tests with py310-ubuntu	7m 0s
Test suite with py314-windows-64	27m 58s
Parallel tests with py314-ubuntu, mypyc-compiled	28m 1s
Test suite with py314t-ubuntu, mypyc-compiled	16m 59s
Test suite with py314-ubuntu, mypyc-compiled	15m 49s
Test suite with py310-ubuntu, mypyc-compiled	16m 28s
Parallel tests with py314-ubuntu, interpreted	24m 0s
Test suite with py312-ubuntu	9m 18s
mypyc runtime tests with py313-macos	5m 30s
Parallel tests with py314-windows-64, interpreted	9m 24s
Test suite with py311-ubuntu	9m 13s
Formatting and code style with Black + ruff	1m 56s
Type check our own code (py310-windows-64)	1m 43s
Type check our own code (py310-ubuntu)	1m 17s
	3h 20m 44s

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