fix: avoid mutating caller's array via splice in snapshot sync (A-718)#21759

PhilWindle merged 1 commit intomerge-train/spartanAztecProtocol/aztec-packages:merge-train/spartanfrom

phil/a-718-audit-38-snapshot-sync-mutates-source-ids-array-via-spliceAztecProtocol/aztec-packages:phil/a-718-audit-38-snapshot-sync-mutates-source-ids-array-via-spliceCopy head branch name to clipboard