chore: `VisitedPcs` trait in `CachedState` #32

Job	Run time
commitlint	10s
clippy	29s
featureless-build	1m 3s
format	14s
native-blockifier-artifacts-push	6m 54s
run-python-tests	8s
run-tests	1m 45s
udeps	48s
	11m 31s

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