fix: BucketGrid.insert expected reference instead of an object (CURA-893)
fix: BucketGrid.insert expected reference instead of an object (CURA-893)

alephobjects/CuraEngine,totalretribution/CuraEngine,ROBO3D/CuraEngine,totalretribution/CuraEngine,Ultimaker/CuraEngine,Ultimaker/CuraEngine,totalretribution/CuraEngine,ROBO3D/CuraEngine,alephobjects/CuraEngine,alephobjects/CuraEngine,ROBO3D/CuraEngine