Tests

Add suggestions for misspelled module imports #20520

Job	Run time
Test mypyc suite with 32-bit Python	9m 16s
Test suite with py311-ubuntu	8m 38s
Test suite with py310-ubuntu, mypyc-compiled	15m 19s
Test suite with py314-ubuntu, mypyc-compiled	14m 52s
Test suite with py312-ubuntu	8m 51s
mypyc runtime tests with py313-macos	4m 58s
Test suite with py314t-ubuntu, mypyc-compiled	16m 44s
Type check our own code (py310-ubuntu)	1m 40s
Test suite with py313-ubuntu, mypyc-compiled	13m 34s
Test suite with py314-windows-64	26m 28s
mypyc runtime tests with py310-ubuntu	5m 18s
Type check our own code (py310-windows-64)	2m 7s
Formatting and code style with Black + ruff	2m 2s
Parallel tests with py314-ubuntu, interpreted	25m 26s
Parallel tests with py314-ubuntu, mypyc-compiled	28m 41s
	3h 3m 54s

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