Fix: Missing loading animation when loading multiple turbo frames in …

…a fast way (#911)

* fix white page issue when load multiple turbo frames

* replace settimeout of 0 by requestAnimationFrame

app/javascript/controllers/turbo_frame_controller.js

@@ -30,8 +30,12 @@ export default class extends Controller {
             }
 
             this.urlValue = this.#updatedPageUrl(data)
-
+            
             this.frame.src  = this.urlValue
+
+            requestAnimationFrame(() => {
+                this.frame.setAttribute('busy', 'true');
+            });
         }
     }