refactor: make sure that the droppable styles are kept, update some nodes to reflect their used functionality.

ref: N25B-294

src/pages/VisProgPage/visualProgrammingUI/components/DragDropSidebar.tsx

@@ -124,7 +124,7 @@ export function DndToolbar() {
         }
         {droppableNodes.map(({type, data}) => (
           <DraggableNode
-            className={styles.nodeType}
+            className={styles[`draggable-node-${type}`]}
             nodeType={type}
             onDrop={handleNodeDrop}
           >