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d2ccae1715
Refactors the payload attestation service - Returns a `Result`. we need this for #9434 so we can keep track if we've succeeded with producing payload attestation earlier than the deadline - Separates getting payload attestation data and signing + publishing. This mimics what we do in attestation service and also is needed for #9434 to surface the error while still keeping the same spawning mechanism. In #9434 we want to broadcast payload attestations early if we've already seen an avail envelope. If the SSE event fires, but for some reason getting the payload attestation data from the BN fails, we still want to retry at the deadline. If signing + publishing fails we wont retry at the deadline (similar to the attestation service). Co-Authored-By: Eitan Seri-Levi <eserilev@ucsc.edu>