Tests

refactor `visit_conditional_expr` to fix ternary behavior (option 2) #16921

Job	Run time
Test mypyc suite with 32-bit Python	8m 3s
Test suite with py310-ubuntu	12m 39s
Test suite with py39-ubuntu, mypyc-compiled	14m 51s
Test suite with py313-ubuntu, mypyc-compiled	13m 51s
Test suite with py311-ubuntu	9m 17s
mypyc runtime tests with py39-macos	5m 57s
Type check our own code (py39-ubuntu)	1m 47s
Test suite with py312-ubuntu, mypyc-compiled	13m 54s
Formatting and code style with Black + ruff	1m 52s
Test suite with py314-dev-ubuntu	15m 52s
Type check our own code (py39-windows-64)	2m 20s
Test suite with py39-windows-64	25m 11s
	2h 5m 34s

Provide feedback