Desktop: Fixes #8256: Don't start window minimized in GNOME

[personalizedrefrigerator]

Summary

This pull request prevents Joplin from starting minimized on GNOME.

This should fix #8256.

Explanation

At present, Joplin always starts minimized (unless running in dev mode), and is then shown or remains hidden based on the startMinimized setting.

However, the GNOME desktop environment seems to not always show a minimized window when requested. As such, this pull request should fix Joplin windows sometimes not appearing (#8256).

Testing plan

This pull request changes some logic related to the "start minimized" feature. Thus, this feature needs to be manually tested.

• Launch Joplin (not in dev mode, so use npx electron ., not yarn start)
• Enable start minimized
• Re-launch Joplin
• Verify that Joplin starts minimized and can be opened.