Tests

Improve narrowing with numeric types #20649

Job	Run time
Test mypyc suite with 32-bit Python	9m 33s
Test suite with py314-ubuntu, mypyc-compiled	1m 3s
Test suite with py310-ubuntu, mypyc-compiled	1m 10s
Test suite with py311-ubuntu	8m 40s
Type check our own code (py310-windows-64)	2m 18s
mypyc runtime tests with py310-ubuntu	5m 17s
Test suite with py314-windows-64	26m 28s
Parallel tests with py314-ubuntu, mypyc-compiled	1m 2s
Formatting and code style with Black + ruff	1m 58s
Test suite with py312-ubuntu	8m 51s
mypyc runtime tests with py313-macos	5m 9s
Parallel tests with py314-ubuntu, interpreted	24m 39s
Test suite with py314t-ubuntu, mypyc-compiled	1m 30s
Type check our own code (py310-ubuntu)	1m 32s
Test suite with py313-ubuntu, mypyc-compiled	1m 1s
	1h 40m 11s

Provide feedback