Windows installer: Start menu entries are not created system wide

[kaixxx]

A small issue with the Windows installer, brought up by @Lukas-UAUX here: https://github.com/kaixxx/noScribe/issues/100#issuecomment-2690618605

If noScribe is installed as a system-wide application, the start menu entries are still created in the users AppData instead of the %ALLUSERSPROFILE%. This means that other users on the same machine won't find noScribe in their start menu.

I will correct this in the next release and created this issue as a reminder.