fix: 示例按钮添加icon

src/business/platform/data/templaterender/templates/list.vue

@@ -1630,7 +1630,7 @@ export default {
           button_type: 'example',
           code: 'example',
           label: '示例',
-          icon: '',
+          icon: 'el-icon-view',
           type: 'warning',
           deflow: null,
           isEditOnHis: false,