Show tooltip with item paths for recent project picker items (#8987)

Before

![empty-tooltip](https://github.com/zed-industries/zed/assets/5518/4a00158c-5ae1-4ef9-8686-d4c188a99050)

After

![output](https://github.com/zed-industries/zed/assets/5518/b30f8272-485d-40e1-989a-facd122e96c8)

Release Notes:

- Fixed empty tooltip for recent projects picker items