Interop: make `op-node` check cross-L2 block safety

For Devnet-1, we want a predictable behavior when an invalid message is included in a block.

`op-node` should check validity of interop messages and if a message is invalid, the node should ~halt.~ not promote block safety.

Full halting requires reorg-detection, see: https://github.com/ethereum-optimism/optimism/issues/11693