Tests

Fix crash for empty Annotated type application #22309

Job	Run time
Test mypyc suite with 32-bit Python	11m 52s
Test suite with py311-ubuntu	8m 59s
Test suite with py314-ubuntu, mypyc-compiled	15m 53s
Test suite with py313-ubuntu, mypyc-compiled	16m 1s
Test suite with py312-ubuntu	9m 42s
mypyc runtime tests with py313-macos	7m 4s
Parallel tests with py314-ubuntu, interpreted	25m 9s
Parallel tests with py314-ubuntu, mypyc-compiled	28m 57s
Test suite with py314-windows-64	31m 9s
Test suite with py314t-ubuntu, mypyc-compiled	18m 5s
Formatting and code style with Black + ruff	1m 51s
Test suite with py315-ubuntu, mypyc-compiled	16m 0s
Type check our own code (py310-windows-64)	2m 16s
Parallel tests with py314-windows-64, interpreted	10m 33s
Test suite with py310-ubuntu, mypyc-compiled	17m 7s
mypyc runtime tests with py310-ubuntu	7m 8s
Type check our own code (py310-ubuntu)	1m 4s
	3h 48m 50s

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