refactor(extraSidebarComponent): change variable name 't' to 'displayName' for better readability and clarity of code

src/frontend/src/pages/FlowPage/components/extraSidebarComponent/index.tsx

@@ -186,7 +186,7 @@ export default function ExtraSidebar() {
                           >
                             <div className="flex w-full justify-between text-sm px-3 py-1 bg-white dark:bg-gray-800 items-center border-dashed border-gray-400 dark:border-gray-600 border-l-0 rounded-md rounded-l-none border">
                               <span className="text-black dark:text-white w-full pr-1 truncate text-xs">
-                                {t}
+                                {data[d][t].display_name}
                               </span>
                               <Bars2Icon className="w-4 h-6  text-gray-400 dark:text-gray-600" />
                             </div>