fix: 修复方法不存在报错

src/views/ProjectManage/components/TempPreview.vue

@@ -57,6 +57,12 @@ export default defineComponent({
     const { proxy } = getCurrentInstance();
     provide('questionsData', questionsData);
 
+    function addEmptyArrayProp(obj, propName) {
+      obj[propName] = obj[propName] || { option_group: [] };
+      obj[propName].option_group.push({ groups: [] });
+      return obj[propName];
+    }
+
     // 获取问卷
     async function getQuetions(sn) {
       try {