prompt when loading external scene before overriding local one (#1862)

src/data/index.ts

@@ -367,7 +367,6 @@ export const loadScene = async (id: string | null, privateKey?: string) => {
     // the private key is used to decrypt the content from the server, take
     // extra care not to leak it
     data = await importFromBackend(id, privateKey);
-    window.history.replaceState({}, "Excalidraw", window.location.origin);
   } else {
     data = restoreFromLocalStorage();
   }