Tests

[mypyc] Add irbuild support for vec types (#20724) #20676

Job	Run time
Test mypyc suite with 32-bit Python	9m 31s
Test suite with py313-ubuntu, mypyc-compiled	14m 22s
Parallel tests with py314-ubuntu, interpreted	24m 4s
Parallel tests with py314-ubuntu, mypyc-compiled	28m 57s
Test suite with py314-ubuntu, mypyc-compiled	14m 17s
Type check our own code (py310-windows-64)	2m 43s
Type check our own code (py310-ubuntu)	1m 33s
mypyc runtime tests with py313-macos	6m 14s
Test suite with py311-ubuntu	8m 29s
Test suite with py314t-ubuntu, mypyc-compiled	16m 20s
Test suite with py312-ubuntu	8m 45s
mypyc runtime tests with py310-ubuntu	5m 11s
Formatting and code style with Black + ruff	1m 51s
Test suite with py314-windows-64	26m 58s
Test suite with py310-ubuntu, mypyc-compiled	15m 43s
	3h 4m 58s

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