Tests

Add a flag `--enable-all-error-codes`, which enables all error codes #22288

Job	Run time
Test mypyc suite with 32-bit Python	11m 24s
Test suite with py313-ubuntu, mypyc-compiled	16m 13s
Test suite with py312-ubuntu	9m 52s
Test suite with py310-ubuntu, mypyc-compiled	16m 20s
mypyc runtime tests with py313-macos	5m 19s
Test suite with py311-ubuntu	9m 46s
Test suite with py315-ubuntu, mypyc-compiled	15m 54s
Parallel tests with py314-ubuntu, interpreted	25m 31s
Test suite with py314t-ubuntu, mypyc-compiled	18m 1s
Test suite with py314-windows-64	28m 5s
Parallel tests with py314-ubuntu, mypyc-compiled	30m 30s
Test suite with py314-ubuntu, mypyc-compiled	15m 56s
Parallel tests with py314-windows-64, interpreted	10m 35s
mypyc runtime tests with py310-ubuntu	6m 48s
Formatting and code style with Black + ruff	2m 3s
Type check our own code (py310-windows-64)	2m 55s
Type check our own code (py310-ubuntu)	1m 8s
	3h 46m 20s

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