message: chore: skip unnecessary EpochExt updating
diff: @@ -383,7 +383,9 @@ impl ChainService {
  &block.header().hash(),
  &epoch.last_block_hash_in_previous_epoch(),
  )?;
  + if new_epoch {
  db_txn.insert_epoch_ext(&epoch.last_block_hash_in_previous_epoch(), &epoch)?;
  + }
  let shared_snapshot = Arc::clone(&self.shared.snapshot());
  let origin_proposals = shared_snapshot.proposals();
  