Tests

Refactor State creation logic (#20691) #20495

Job	Run time
Test mypyc suite with 32-bit Python	9m 28s
Test suite with py314-ubuntu, mypyc-compiled	14m 27s
Test suite with py313-ubuntu, mypyc-compiled	14m 38s
Test suite with py314t-ubuntu, mypyc-compiled	18m 19s
mypyc runtime tests with py313-macos	6m 1s
Test suite with py314-windows-64	26m 59s
Parallel tests with py314-ubuntu, interpreted	24m 35s
Test suite with py311-ubuntu	8m 44s
Test suite with py312-ubuntu	8m 59s
Test suite with py310-ubuntu, mypyc-compiled	14m 39s
mypyc runtime tests with py310-ubuntu	5m 17s
Parallel tests with py314-ubuntu, mypyc-compiled	28m 22s
Formatting and code style with Black + ruff	1m 48s
Type check our own code (py310-ubuntu)	1m 43s
Type check our own code (py310-windows-64)	2m 31s
	3h 6m 30s

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