Bug: Last session does not load after restart

[wladimiiir]

Describe the bug
When having "Load last session" on Start up enabled, this works when I restart the session, but when I close the application and reopen it it will not load the previous session.

To Reproduce
Steps to reproduce the behavior:

1. Switch to "Load last session" in Settings -> General -> Start Up
2. Make some conversation.
3. Close AiderDesk
4. Open AiderDesk
5. The session will not be loaded

Expected behavior
A previous conversation is loaded after restart.