Tests

[mypyc] feat: try constant fold in `convert_format_expr_to_str` #20187

Job	Run time
Test mypyc suite with 32-bit Python	9m 54s
Test suite with py314-ubuntu, mypyc-compiled	14m 54s
Test suite with py313-ubuntu, mypyc-compiled	14m 50s
Test suite with py312-ubuntu	9m 44s
Formatting and code style with Black + ruff	1m 57s
Parallel tests with py314-ubuntu, mypyc-compiled	28m 37s
Test suite with py311-ubuntu	9m 19s
Parallel tests with py314-ubuntu, interpreted	24m 6s
mypyc runtime tests with py313-macos	5m 51s
mypyc runtime tests with py310-ubuntu	5m 36s
Test suite with py310-ubuntu, mypyc-compiled	15m 19s
Type check our own code (py310-ubuntu)	1m 41s
Test suite with py314t-ubuntu, mypyc-compiled	17m 5s
Type check our own code (py310-windows-64)	2m 23s
Test suite with py314-windows-64	27m 45s
	3h 9m 1s

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