The version number from menu Help -> About JupyterLab does not match the actual one

[blzzua]

Description

Reproduce

1. Install any older version.
2. Setup profile,
3. Delete older version as package, but keep data in ~/.config/jupyterlab-desktop
4. Install any other version.
5. Check version using /usr/bin/jlab --version
6. Check version using menu Help -> About JupyterLab. It does not coincide with the current one.

Expected behavior

Context

• Operating System and version: Linux Ubuntu 22.04 (but also it happens in windows 11)
• JupyterLab-Desktop version: 4.2.1-1
• Installer: .deb

Troubleshoot Output

$ jlab --version
4.2.1-1

but same time menu Help -> About JupyterLab show this: 

When updating, the version number is not updated. As I understand it, the version number is recorded in the file $HOME/.config/jupyterlab-desktop/app-data.json while first installation, and after the update/reinstall package, the actual version number is not recorded. This is very confusing.

I saw the recommendation to delete, including deleting the profile, but then you have to delete all the settings.

[blzzua]

it look like the attachment from first message was not saved. here is it:

[JasonWeill]

From triage: JupyterLab Desktop could override JupyterLab's "about" dialog to include info about both the version of Desktop and the version of Lab. Thank you for your contribution!

[krassowski]

Noting down that this confusion is coming up again and again, for example recently in #775.