ShapeGrammar icon got a default white background on export to png.

geoNodes/shapeGrammar.svg

@@ -27,14 +27,15 @@
      inkscape:deskcolor="#d1d1d1"
      inkscape:document-units="px"
      inkscape:zoom="2.5563567"
-     inkscape:cx="284.19351"
+     inkscape:cx="284.38911"
      inkscape:cy="262.28734"
      inkscape:window-width="3840"
      inkscape:window-height="2103"
      inkscape:window-x="0"
      inkscape:window-y="33"
      inkscape:window-maximized="1"
-     inkscape:current-layer="layer1" />
+     inkscape:current-layer="layer1"
+     inkscape:export-bgcolor="#ffffffff" />
   <defs
      id="defs1">
     <marker