apollo_gateway: skip archiving proof if transaction is P2P

[einat-starkware]

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[einat-starkware]

• apollo_gateway: skip archiving proof if transaction is P2P #14022 👈 (View in Graphite)
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PR Summary

Medium Risk
Changes the transaction ingestion path to conditionally skip proof archiving based on P2P metadata, which can affect proof persistence and error/forwarding behavior for those transactions.

Overview
Skips the GCS proof-archive write for transactions received via P2P (p2p_message_metadata.is_some()), while still storing proofs in the proof manager, to avoid duplicate archival writes.

Updates the archiving spawn/abort logic to handle an optional archive task, and extends gateway tests to cover both P2P and non-P2P paths (including ensuring mempool forwarding is unaffected by archive failures on the P2P path).

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