This mostly affects the collab and outline panels for now. It has always
been a bit weird that the search field was at the bottom of the panel,
even more so because in both cases, you can _arrow down_ to start
navigating the list with your keyboard. So, with the search at the
bottom, you'd arrow down and get to the top of the list, which was very
strange. Now, with it at the top, it not only looks better but it is
also more generally consistent with other surfaces in the app, like
pickers, the settings UI, rules library, etc. Most search fields are
always at the top.
<img width="800" height="1830" alt="image"
src="https://github.com/user-attachments/assets/3e2c3b8f-5907-4d83-8804-b3fc77342103"
/>
Release Notes:
- N/A
361fcc5c90