multisessions: with exited sessions the `+` session menu is missing active session

[midleman]

System details:

Positron and OS details:

2025.06.0-166

Describe the issue:

Steps to reproduce the issue:

1. Start 2 R sessions
2. Start 1 Python session
3. Go to 1st R session and type q() in console
4. Verify session state is exited (red dot) - PASS
5. Click on 2nd R session and open + session menu
6. Verify 2 entries: R and Python session
7. Click on 1st R session and open + session menu
8. Verify 2 entries: R and Python session - FAIL

Screen.Recording.2025-05-29.at.1.53.29.PM.mov

Expected or desired behavior:

We should show top 5 (deduped) active sessions in the menu, but we are filtering out all instances of the R session because the one we have currently selected has exited

Were there any error messages in the UI, Output panel, or Developer Tools console?

n/a

[midleman]

Verified Fixed

Positron Version(s) : 2025.07.0-112
OS Version(s) : MacOS

Test scenario(s)

Confirmed this issue has been resolved. Closing ticket.

Link(s) to test cases run or created:

n/a