Update src/core/event/index.js

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

src/core/event/index.js

@@ -252,7 +252,7 @@
         const hasSubSidebar = linkParent?.querySelector('.app-sub-sidebar');
 
         if (hasSubSidebar) {
-          dom.body.classList.toggle('collapse');
+          linkParent.classList.toggle('collapse');
         }
       });
     }