fix: Clear local storage when logout

Clear local storage which storage keystone_token and other info

Change-Id: Ife904f05918a3b107c55a4db2244b84a01a2dde0

src/stores/root.js

@@ -270,6 +270,8 @@ export class RootStore {
     stores.forEach((store) => {
       store.clearData();
     });
+    // clear keystone_token in the local storage
+    localStorage.clear();
   }
 }