assistant: Remove unneeded wrapping `div` in `ModelSelector` (#14024)

This PR removes an unneeded wrapping `div` in the `ModelSelector`.

Release Notes:

- N/A
2db06c1567Marshall Bowers committed on 7/9/2024, 8:40:00 PM· committed by GitHubparentc59d5fb
1 file changedLine totals unavailable