This PR makes it so the Collab panel can be disabled by the
organization's configuration:

<img width="239" height="191" alt="Screenshot 2026-04-09 at 2 38 35 PM"
src="https://github.com/user-attachments/assets/48216c00-85cd-441a-b613-7468db2b25bd"
/>

Depends on https://github.com/zed-industries/cloud/pull/2247.

Closes CLO-638.

Release Notes:

- N/A