fix logout issue

lib/data/services/user_imp.dart

@@ -52,4 +52,9 @@ class UserServiceImp implements UserService {
   Future<void> enableUser(String userID, bool enabled) {
     return userDataProvider.enableUser(userID, enabled);
   }
+
+  @override
+  Future<User?> getUser(String userID) {
+    return userDataProvider.getUser(userID);
+  }
 }