The recent projects had two plus buttons inside of it which weren't
immediately clear what they did. Those buttons would add a project to
the current workspace, which turned out to be _not_ what people expected
it would do. Because of this, I removed one of them and swapped the icon
of the other, to hopefully make the distinction more clear.

<img width="500" height="484" alt="Screenshot 2026-03-18 at 11  59@2x"
src="https://github.com/user-attachments/assets/341769fb-771e-450b-8814-a641bd8b63d5"
/>

Release Notes:

- N/A