Fix Issue #18426 : FastPreSelection can't work when turning edge on
See #18426. vtk fastpreselection function can't work when set edgevisibilityon or under point mode.This is due to some problems with judging whether it is currently in selection mode.So I made the following changes: In the function "DrawingEdge()" that judges whether to draw an edge, &&!DrawingSelection is used to judge whether it is currently in selection mode.