refactor(@angular-devkit/core): deprecate PartiallyOrderedSet (#33051) #2992

Job	Run time
lint	2m 6s
build	36s
build-e2e-windows	35s
e2e-windows	-1s
Browser Compatibility Tests	-1s
test	-1s
e2e	-1s
publish-snapshots	-1s
e2e-package-managers	-1s
e2e-snapshots	-1s
	3m 10s

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