Tests

[mypyc] extend `get_expr_length` to try `constant_fold_expr` [1/4] (#… #19704

Job	Run time
Test mypyc suite with 32-bit Python	9m 17s
Type check our own code (py310-windows-64)	2m 38s
Test suite with py314-windows-64	25m 25s
Test suite with py312-ubuntu	10m 0s
Type check our own code (py310-ubuntu)	1m 41s
Test suite with py313-ubuntu, mypyc-compiled	14m 5s
Test suite with py314t-ubuntu, mypyc-compiled	16m 12s
Parallel tests with py314-ubuntu, interpreted	23m 31s
Test suite with py311-ubuntu	9m 5s
Test suite with py310-ubuntu, mypyc-compiled	13m 29s
mypyc runtime tests with py313-macos	6m 39s
mypyc runtime tests with py310-ubuntu	5m 0s
Test suite with py314-ubuntu, mypyc-compiled	14m 12s
Parallel tests with py314-ubuntu, mypyc-compiled	27m 9s
Formatting and code style with Black + ruff	2m 3s
	3h 0m 26s

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