Interop: metrics for reorgs

[protolambda]

Add to the op-node:

• metric for backwards block-number changes (likely reorgs)

Add to the op-supervisor:

• metric for local-unsafe logs DB rewinds (number of unsafe blocks we rewind), per chain
• metric for local-safe fromda DB rewinds (number of local-safe blocks we rewind), per chain
• metric for cross-safe fromda DB rewinds (number of cross-safe blocks we rewind), per chain
• metric for local-safe invalidation
• metric for failed access-list RPC checks (assumed user reorg, or just malicious user)