Tests

Fix crash on typevar with forward ref used in other module #19575

Job	Run time
Test mypyc suite with 32-bit Python	8m 34s
Test suite with py312-ubuntu	10m 6s
Test suite with py311-ubuntu	9m 24s
Test suite with py314-ubuntu, mypyc-compiled	13m 59s
mypyc runtime tests with py313-macos	4m 21s
Test suite with py310-ubuntu, mypyc-compiled	14m 37s
Test suite with py313-ubuntu, mypyc-compiled	15m 20s
Test suite with py314-windows-64	27m 10s
Type check our own code (py310-windows-64)	2m 18s
mypyc runtime tests with py310-ubuntu	5m 28s
Type check our own code (py310-ubuntu)	1m 38s
Formatting and code style with Black + ruff	1m 57s
	1h 54m 52s

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