Run payload envelope DA check concurrently - #16899
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When processing an execution payload envelope, the data availability (DA) check previously ran sequentially after consensus verification and EL validation had both completed. This moves the DA check into the same `errgroup` so it runs concurrently with payload verification and EL `newPayload` validation. - The DA check only runs when the latest bid carries blob KZG commitments (unchanged behavior). - Uses the group context (`gCtx`) so a failure in any of the three cancels the others. This enables ethereum/beacon-APIs#588 to emit `execution_payload_available`
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When processing an execution payload envelope, the data availability (DA) check previously ran sequentially after consensus verification and EL validation had both completed. This moves the DA check into the same
errgroupso it runs concurrently with payload verification and ELnewPayloadvalidation.gCtx) so a failure in any of the three cancels the others.This enables ethereum/beacon-APIs#588 to emit
execution_payload_available