As in, make it consistent with the other panels, where we use a blue
border for the focused state and a different background color for the
selected state. It's been a long time coming little design fix to the
collab panel.

<img width="450" alt="Screenshot 2026-07-27 at 8  01@2x"
src="https://github.com/user-attachments/assets/70724483-8092-4993-afd4-5faa3d3fae51"
/>

Release Notes:

- N/A