fixup! feat(federation): support /make_join and /send_join for restricted rooms

remove unnecessery clone

src/api/server_server.rs

@@ -1784,7 +1784,7 @@ async fn create_join_event(
             .collect(),
         // Event field is required if the room version supports restricted join rules.
         event: Some(
-            to_raw_value(&CanonicalJsonValue::Object(value.clone()))
+            to_raw_value(&CanonicalJsonValue::Object(value))
                 .expect("To raw json should not fail since only change was adding signature"),
         ),
     })