Make reading the request body work in Django ASGI apps. #3966

Job	Run time
pyramid, python 3.5, ubuntu-20.04	2m 13s
pyramid, python 2.7, ubuntu-20.04	3m 54s
pyramid, python 3.6, ubuntu-20.04	2m 12s
pyramid, python 3.7, ubuntu-20.04	1m 51s
pyramid, python 3.8, ubuntu-20.04	1m 49s
pyramid, python 3.9, ubuntu-20.04	2m 32s
pyramid, python 3.10, ubuntu-20.04	3m 2s
pyramid, python 3.11, ubuntu-20.04	2m 29s
pyramid, python 3.12, ubuntu-20.04	1m 23s
All pyramid tests passed or skipped	1s
	21m 26s

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