fix(组件：微信视频号): 出现多个视频号组件时，从第二个开始无法拖拽排序

src/app/component/view/wechat_channel/js/design.js

@@ -483,7 +483,7 @@ Vue.component("wechat_channel-edit", {
 		initSortable: function () {
 			// 检查Sortable库是否已加载
 			if (typeof Sortable !== 'undefined') {
-				const videoList = document.getElementById('videoListEdit');
+				const videoList = this.$el.querySelector('.video-list-edit');
 				if (videoList) {
 					// 销毁现有实例
 					if (this.sortableInstance) {