fix: fix wrong css class (#23299)

web/app/components/workflow/nodes/_base/components/variable/variable-label/base/variable-node-label.tsx

       {
         nodeTitle && (
           <div
-            className='system-xs-medium max-[60px] truncate text-text-secondary'
+            className='system-xs-medium max-w-[60px] truncate text-text-secondary'
             title={nodeTitle}
           >
             {nodeTitle}