fix: don't fill perimeter gaps between inner wall and skin/infill (CURA-4027)
fix: don't fill perimeter gaps between inner wall and skin/infill (CURA-4027)

this solves a problem that too many gaps are filled when alternate extra wall is enabled or when the initial layer line width is larger
if the infill pattern is concentric

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