Tests

Make NoneType annotation error a new code #19336

Job	Run time
Test mypyc suite with 32-bit Python	8m 50s
Test suite with py311-ubuntu	9m 41s
Test suite with py39-ubuntu, mypyc-compiled	15m 21s
Test suite with py310-ubuntu	12m 39s
Test suite with py314-windows-64	26m 1s
Test suite with py312-ubuntu, mypyc-compiled	13m 50s
Test suite with py314-ubuntu, mypyc-compiled	14m 35s
Test suite with py313-ubuntu, mypyc-compiled	13m 54s
Type check our own code (py39-windows-64)	2m 25s
mypyc runtime tests with py313-macos	5m 37s
Type check our own code (py39-ubuntu)	1m 36s
mypyc runtime tests with py310-ubuntu	4m 29s
Formatting and code style with Black + ruff	1m 57s
	2h 10m 55s

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