Closes #49854 

Before you mark this PR as ready for review, make sure that you have:
- [x] Added a solid test coverage and/or screenshots from doing manual
testing
- [x] Done a self-review taking into account security and performance
aspects
- [x] No UI changes

Video for the fix: 
in the video i open a project -> close the project -> quit out of zed ->
reopen zed -> zed opens to an empty workspace which was not the case
before


https://github.com/user-attachments/assets/1afb44a1-932b-4dab-8228-9d9d65750b6e



Release Notes:
 - Fixed closed projects re-opening erroneously