Tests

Fix `--strict-equality` for iteratively visited code #19364

Job	Run time
Test mypyc suite with 32-bit Python	8m 38s
Test suite with py311-ubuntu	9m 14s
Test suite with py312-ubuntu, mypyc-compiled	14m 21s
Test suite with py39-ubuntu, mypyc-compiled	16m 22s
Test suite with py310-ubuntu	12m 16s
Type check our own code (py39-windows-64)	2m 10s
mypyc runtime tests with py310-ubuntu	4m 45s
Type check our own code (py39-ubuntu)	1m 40s
Test suite with py314-ubuntu, mypyc-compiled	14m 25s
Formatting and code style with Black + ruff	2m 4s
Test suite with py314-windows-64	26m 40s
mypyc runtime tests with py313-macos	4m 19s
Test suite with py313-ubuntu, mypyc-compiled	14m 32s
	2h 11m 26s

Provide feedback