added zones drop down in builder ouline and adjust width of displayZones

app/src/modules/visualization/handleSaveTemplate.ts

@@ -30,7 +30,7 @@ export const handleSaveTemplate = async ({
 }: HandleSaveTemplateProps): Promise<void> => {
   try {
     // Check if the selected zone has any widgets
-    if (!selectedZone.widgets || selectedZone.widgets.length === 0) {
+    if (!selectedZone.panelOrder || selectedZone.panelOrder.length === 0) {
       console.warn("No widgets found in the selected zone.");
       return;
     }