Fix semantic Deneb <> tree-states conflicts

beacon_node/store/src/metadata.rs

@@ -144,8 +144,8 @@ impl StoreItem for BlobInfo {
         DBColumn::BeaconMeta
     }
 
-    fn as_store_bytes(&self) -> Vec<u8> {
-        self.as_ssz_bytes()
+    fn as_store_bytes(&self) -> Result<Vec<u8>, Error> {
+        Ok(self.as_ssz_bytes())
     }
 
     fn from_store_bytes(bytes: &[u8]) -> Result<Self, Error> {