NodeBuilder: Fast-path getDataFromNode when no sub-build is active. (#33656)

src/nodes/core/NodeBuilder.js

@@ -1852,6 +1852,8 @@ class NodeBuilder {
 
 		let data = nodeData[ shaderStage ];
 
+		if ( this.subBuildLayers.length === 0 ) return data;
+
 		const subBuilds = nodeData.any ? nodeData.any.subBuilds : null;
 		const subBuild = this.getClosestSubBuild( subBuilds );