feat(rt): allow rendering of points in RT Struct (#4128)

extensions/cornerstone/src/getCustomizationModule.ts

@@ -24,7 +24,9 @@ const tools = {
     },
     { toolName: toolNames.StackScrollMouseWheel, bindings: [] },
   ],
-  enabled: [{ toolName: toolNames.SegmentationDisplay }],
+  enabled: [{ toolName: toolNames.SegmentationDisplay }, { toolName: toolNames.PlanarFreehandContourSegmentation, configuration: {
+    displayOnePointAsCrosshairs: true,
+  }}],
 };
 
 function getCustomizationModule() {