To distinguish our versions of Okular from the default apps the application name (i.e. https://doc.qt.io/qt-6/qcoreapplication.html#applicationName-prop) should have one of the following suffixes:
* GnuPG VS-Desktop: -vsd
* GnuPG Desktop: -gpd
* Gpg4Win: -g4w
For Kleopatra this was implemented for {T7528}.