Resolves#8172
## Summary
This PR addresses an issue where the`id` field in the GraphQL schema is
incorrectly marked as `nullable`. The change ensures that the `id` field
is set to non-nullable, which aligns with the expectation that every
resource should have a non-nullable ID, especially when using UUIDs as
primary keys.
### Changes
- Fix: Set the `id` field type to `GraphQLNonNull` for consistency in
the GraphQL schema.
db29e1ec98