Always missed the ability to clear the search without having to reach
for my keyboard if I'm on a mouse-first workflow:

<img width="460" height="390" alt="Screenshot 2026-01-06 at 9  27@2x"
src="https://github.com/user-attachments/assets/fda4650c-72fb-4b5b-92f6-7c69661507f8"
/>

Release Notes:

- Added a button to clear the search query for the collab and outline
panels' search bar.