fix initial columnless situation

beacon_chain/consensus_object_pools/data_column_quarantine.nim

@@ -80,6 +80,12 @@ func popDataColumns*(
       r.add(c)
   r
 
+func checkForInitialDcSidecars*(quarantine: DataColumnQuarantine,
+    blck: deneb.SignedBeaconBlock | electra.SignedBeaconBlock): bool =
+  for idx in 0..<len(blck.message.body.blob_kzg_commitments):
+    if (blck.root, ColumnIndex idx) notin quarantine.data_columns:
+      return false
+  true
 
 func hasDataColumns*(quarantine: DataColumnQuarantine,
     blck: deneb.SignedBeaconBlock | electra.SignedBeaconBlock): bool =

beacon_chain/nimbus_beacon_node.nim

@@ -427,7 +427,7 @@ proc initFullNode(
         #                             maybeFinalized = maybeFinalized)
 
         when consensusFork >= ConsensusFork.Deneb:
-          if not dataColumnQuarantine[].hasBlobs(forkyBlck):
+          if not dataColumnQuarantine[].checkForInitialDcSidecars(forkyBlck):
             # We don't have all the data columns for this block, so we have
             # to put it in columnless quarantine.
             if not quarantine[].addColumnless(dag.finalizedHead.slot, forkyBlck):