chore: `VisitedPcs` trait in `CachedState` #33

Job	Run time
featureless-build	1m 11s
clippy	35s
commitlint	11s
format	19s
native-blockifier-artifacts-push	6m 24s
run-python-tests	10s
run-tests	1m 57s
udeps	53s
	11m 40s

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