Make the Outline render mode draw with consistent stroke thickness at any viewport zoom (#3848)

* Remove dead code for now-retired SVG implementation

* Implement viewport zoom compensation for thickness

node-graph/nodes/vector/src/vector_nodes.rs

@@ -211,7 +211,6 @@ where
 		join_miter_limit: miter_limit,
 		align,
 		transform: DAffine2::IDENTITY,
-		non_scaling: false,
 		paint_order,
 	};