fix admin panel user add having an invalid id

src/app/admin/users/users.ts

@@ -35,7 +35,7 @@ export async function addUser(user: User) {
     return;
   }
 
-  addToWritableArray(users, user);
+  addToWritableArray(users, Object.assign(user, { id: data.id }));
 }
 
 export async function editUser(user: User) {