fix(接口测试): 解决swagger文件导入页面400错误

--user=郭雨琦
--bug=1013871
swagger文件导入，接口报500“解析数据出错”，后面再导入接口都返回400
https://www.tapd.cn/55049933/bugtrace/bugs/view/1155049933001013871

frontend/src/business/components/api/definition/components/import/ApiImport.vue

@@ -424,7 +424,11 @@ export default {
         param.saved = this.saved;
         param.model = this.model;
         if (this.currentModule) {
-          param.moduleId = this.formData.moduleId
+          if (!this.formData.moduleId || this.formData.moduleId.length === 0) {
+            param.moduleId = this.currentModule[0].id;
+          } else {
+            param.moduleId= this.formData.moduleId
+          }
           param.modeId = this.formData.modeId
         }
         param.projectId = this.projectId;