Update App.tsx and ViewportHost.ts to include viewport camera sync request ID and resolve object scale constraint axis

src/app/App.tsx

@@ -1252,6 +1252,8 @@ export function App({ store, initialStatusMessage }: AppProps) {
     String(DEFAULT_GRID_SIZE)
   );
   const [viewportGridVisible, setViewportGridVisible] = useState(true);
+  const [viewportCameraSyncRequestId, setViewportCameraSyncRequestId] =
+    useState(0);
   const [uvOffsetDraft, setUvOffsetDraft] = useState(
     createVec2Draft(createDefaultFaceUvState().offset)
   );