Ensure project search keyboard shortcut tooltip is displayed (#22717)

Part of: https://github.com/zed-industries/zed/issues/22673

Before/After:
<img width="212" alt="Screenshot 2025-01-06 at 12 17 52"
src="https://github.com/user-attachments/assets/8eef7c5e-ccc7-4946-be19-f10dcd5f957d"
/><img width="211" alt="Screenshot 2025-01-06 at 12 17 42"
src="https://github.com/user-attachments/assets/8612b1b5-139d-422f-9457-ce399814d641"
/>


Release Notes:

- N/A