fix(consensus): made attestation controller non-critical #3180
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The attestation logic in consensus component is experimental, while p2p synchronization is critical. I've made the attestation controller non-critical, i.e. if attestation controller fails, an error is logged, but the consensus component keeps working (on both main node and external node). This should prevent situations like in https://www.notion.so/matterlabs/mainnet2-p2p-synchronization-downtime-12aa48363f2380e6b8e0c8e1c3728201?pvs=4