Patch empty appData

packages/app/src/Login/MultiAccountStore.ts

@@ -77,6 +77,12 @@ export class MultiAccountStore extends ExternalStore<LoginSession> {
       if (v.type === LoginSessionType.PrivateKey && v.readonly) {
         v.readonly = false;
       }
+      v.appData ??= {
+        item: {
+          mutedWords: []
+        },
+        timestamp: 0
+      }
     }
   }