fix: don't overwrite printZ (CURA-3753)
fix: don't overwrite printZ (CURA-3753)

undoes an implicit change from f86fcffed3068af01554141056bb471b762c51aa : refactor: move support modifier meshes into common SupportArea method (CURA-2747)

I see no reason why that change was made.

the printZ was compensated for rafts before it was set in createLayerParts

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