Allow nesting of Annotated with TypedDict special forms inside TypedDicts #13932

Job	Run time
Test mypyc suite with 32-bit Python	7m 8s
Test suite with py38-ubuntu, mypyc-compiled	17m 48s
Test suite with py38-windows-64	20m 42s
Test suite with py39-ubuntu	20m 23s
Test suite with py310-ubuntu	16m 31s
Test suite with py311-ubuntu, mypyc-compiled	15m 45s
Test suite with py312-ubuntu, mypyc-compiled	18m 45s
Test suite with py313-ubuntu, mypyc-compiled	20m 59s
mypyc runtime tests with py39-macos	4m 14s
Type check our own code (py38-ubuntu)	1m 57s
Type check our own code (py38-windows-64)	2m 19s
Formatting and code style with Black + ruff	1m 1s
	2h 27m 32s

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