Tests

[mypyc] feat: support constant folding in `convert_format_expr_to_str… #20234

Job	Run time
Test mypyc suite with 32-bit Python	9m 49s
Test suite with py311-ubuntu	9m 22s
Test suite with py312-ubuntu	9m 55s
Parallel tests with py314-ubuntu, interpreted	23m 45s
Test suite with py310-ubuntu, mypyc-compiled	15m 27s
Test suite with py313-ubuntu, mypyc-compiled	14m 55s
Test suite with py314-ubuntu, mypyc-compiled	15m 16s
mypyc runtime tests with py313-macos	6m 58s
Parallel tests with py314-ubuntu, mypyc-compiled	27m 15s
Test suite with py314t-ubuntu, mypyc-compiled	17m 26s
Test suite with py314-windows-64	27m 16s
mypyc runtime tests with py310-ubuntu	5m 29s
Type check our own code (py310-windows-64)	2m 24s
Type check our own code (py310-ubuntu)	1m 40s
Formatting and code style with Black + ruff	1m 58s
	3h 8m 55s

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