[PEP 695] Support recursive type aliases #12488

Job	Run time
Test mypyc suite with 32-bit Python	7m 36s
Test suite with py38-ubuntu, mypyc-compiled	17m 26s
Test suite with py38-windows-64	19m 53s
Test suite with py39-ubuntu	16m 15s
Test suite with py310-ubuntu	16m 25s
Test suite with py311-ubuntu, mypyc-compiled	15m 48s
Test suite with py312-ubuntu, mypyc-compiled	18m 51s
mypyc runtime tests with py39-macos	5m 30s
mypyc runtime tests with py38-debug-build-ubuntu	4m 52s
Type check our own code (py38-ubuntu)	1m 55s
Type check our own code (py38-windows-64)	2m 36s
Formatting and code style with Black + ruff	44s
	2h 7m 51s

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