Fix connecting to org.freedesktop.DBus.ObjectManager InterfacesAdded
The metatype also needs to be qRegisterMetaType'd in addition to qDBusRegisterMetaType and Q_DECLARE_METATYPE.
I still don't know why it worked in plasmawindowed though…
The metatype also needs to be qRegisterMetaType'd in addition to qDBusRegisterMetaType and Q_DECLARE_METATYPE.
I still don't know why it worked in plasmawindowed though…