set questionnaire server origin

apps/app/src/server/service/config-loader.ts

@@ -644,7 +644,7 @@ const ENV_VAR_NAME_TO_CONFIG_INFO = {
     ns: 'crowi',
     key: 'app:questionnaireServerOrigin',
     type: ValueType.STRING,
-    default: null,
+    default: 'https://q.growi.org',
   },
   QUESTIONNAIRE_CRON_SCHEDULE: {
     ns: 'crowi',