Update examples/threejs-server/src/threejs-app.tsx

Co-authored-by: Jonathan Hefner <jonathan@hefner.pro>

Author: ochafik

examples/threejs-server/src/threejs-app.tsx

@@ -229,8 +229,8 @@ export default function ThreeJSApp({
 
   // Sync display mode from host context
   useEffect(() => {
-    if (hostContext?.displayMode) {
-      setCurrentDisplayMode(hostContext.displayMode as "inline" | "fullscreen");
+    if (hostContext?.displayMode === "inline" || hostContext?.displayMode === "fullscreen") {
+      setCurrentDisplayMode(hostContext.displayMode);
     }
   }, [hostContext?.displayMode]);