fix: 更新诸多bug

lib/app/modules/kr_message/controllers/kr_message_controller.dart

@@ -21,6 +21,7 @@ class KRMessageController extends GetxController {
     controlFinishRefresh: true, // ⭐ 必须设置为 true
     controlFinishLoad: true,    // 加载更多通常也需要手动控制
   );
+  final ScrollController kr_scrollController = ScrollController();
 
   @override
   void onInit() {
@@ -86,6 +87,7 @@ class KRMessageController extends GetxController {
   @override
   void onClose() {
     refreshController.dispose();
+    kr_scrollController.dispose();
     super.onClose();
   }
 }