Do not override filter_by_material if no material is found
Do not override filter_by_material if no material is found

CURA-3884

We rely on the machine to decide whether it needs machine specific
materials, so we don't override the filter_by_material flag when
looking for quality profiles for a material.

Curahelper/Cura,ynotstartups/Wanhao,ynotstartups/Wanhao,fieldOfView/Cura,Curahelper/Cura,fieldOfView/Cura