Tests

Fix value-in-container narrowing regression #22341

Job	Run time
Test mypyc suite with 32-bit Python	10m 41s
Test suite with py314-ubuntu, mypyc-compiled	15m 35s
Test suite with py311-ubuntu	9m 35s
Test suite with py314-windows-64	31m 18s
Test suite with py310-ubuntu, mypyc-compiled	17m 2s
Test suite with py312-ubuntu	9m 59s
Parallel tests with py314-ubuntu, interpreted	28m 11s
mypyc runtime tests with py310-ubuntu	5m 57s
Test suite with py313-ubuntu, mypyc-compiled	16m 15s
Type check our own code (py310-windows-64)	1m 40s
Test suite with py314t-ubuntu, mypyc-compiled	18m 6s
Parallel tests with py314-windows-64, interpreted	10m 35s
Type check our own code (py310-ubuntu)	1m 5s
Formatting and code style with Black + ruff	1m 54s
mypyc runtime tests with py313-macos	7m 7s
Parallel tests with py314-ubuntu, mypyc-compiled	29m 5s
Test suite with py315-ubuntu, mypyc-compiled	15m 45s
	3h 49m 50s

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