refactor(@angular-devkit/core): deprecate PartiallyOrderedSet (#33051) #1922

Job	Run time
list	20s
workflow (devkit-core-tests-rerun)	25s
workflow (build-cli)	23s
workflow (modules-builder-tests)	28s
workflow (build-unit-tests)	34s
workflow (devkit-core-tests)	26s
	2m 36s

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