Fix unknown object type for article notifications See #2649
Fix unknown object type for article notifications
See #2649

WoltLab/WCF,WoltLab/WCF,Cyperghost/WCF,WoltLab/WCF,SoftCreatR/WCF,SoftCreatR/WCF,SoftCreatR/WCF,Cyperghost/WCF,Cyperghost/WCF,SoftCreatR/WCF,Cyperghost/WCF,MenesesEvandro/WCF,WoltLab/WCF,Cyperghost/WCF,MenesesEvandro/WCF