Fix loading image wallpaper plugin config UI in KCM
Now org.kde.plasma.plasmoid is actually a QML plugin importable outside of plasmashell. We can't override it anymore. (cherry picked from commit ae599c04)
Now org.kde.plasma.plasmoid is actually a QML plugin importable outside of plasmashell. We can't override it anymore. (cherry picked from commit ae599c04)
mentioned in commit 8ab2ff78