Log the slot and blockroot when we deadline waiting for blobs (#13774)

beacon-chain/blockchain/process_block.go

@@ -586,7 +586,7 @@ func (s *Service) isDataAvailable(ctx context.Context, root [32]byte, signed int
 			s.blobNotifiers.delete(root)
 			return nil
 		case <-ctx.Done():
-			return errors.Wrap(ctx.Err(), "context deadline waiting for blob sidecars")
+			return errors.Wrapf(ctx.Err(), "context deadline waiting for blob sidecars slot: %d, BlockRoot: %#x", block.Slot(), root)
 		}
 	}
 }