chore: reduce maximum page size for read auth models

[adriantam]

Description

Limit size to reduce load on database

References

Review Checklist

• [ ] I have clicked on "allow edits by maintainers".
• [ ] I have added documentation for new/changed functionality in this PR or in a PR to openfga.dev [Provide a link to any relevant PRs in the references section above]
• [ ] The correct base branch is being used, if not main
• [ ] I have added tests to validate that the change in functionality is working as expected

[adriantam]

Don't change the limit for now as it is breaking