Fix DataConnectError

✅ Solution

The "DataConnectError" in firebase-auth often arises from type mismatches or missing properties when working with user data, especially custom claims. Ensure the data you're passing to `setCustomUserClaims` adheres strictly to the expected type definitions, and that all required properties are present and correctly formatted according to your Firebase setup. Specifically, double-check the types of your custom claims and use the `as` keyword to properly typecast the user data when accessing properties.