Sketcher: allow icon/color update in STATUS_SKETCH_UseHandler mode

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Updating color and constraint icons does not seem necessary in other modes:
https://forum.freecadweb.org/viewtopic.php?f=3&t=56064&start=10#p486578

src/Mod/Sketcher/Gui/ViewProviderSketch.cpp

@@ -5880,7 +5880,7 @@ Restart:
     }
 
     // Avoids unneeded calls to pixmapFromSvg
-    if(Mode==STATUS_NONE) {
+    if(Mode==STATUS_NONE || Mode==STATUS_SKETCH_UseHandler) {
        this->drawConstraintIcons();
        this->updateColor();
     }