Issue Addressed

• add logs
• tighten up lookup de-duplication logic
• an alternative fix to: Fix unexpected UnrequestedBlobId and ExtraBlocksReturned errors due to race conditions. #5477
  • the core issue in the bug there is that we update requested_ids while blobs are still downloading if we download the RPC block in between blobs of the stream. this becomes and issue because requested_ids is updated with any blobs that come via gossip.
  • proposed solution here is to only update the blobs if the request state is AwaitingDownload which means it has been either completed or not yet started