[bug] minimax mcode 接入后 askuser 不会弹窗显示，只显示 json #1110

ask_user
参数
{
  "async": false,
  "steps": [
    {
      "id": "overwrite",
      "header": "已有正文",
      "question": "现有 20 篇文档都有正文（非本技能生成），新版精读如何写入？",
      "options": [
        {
          "label": "覆盖为新版精读（推荐）",
          "description": "先导出备份旧文到本地，再全文替换",
          "recommended": true
        },
        {
          "label": "保留旧正文，新版追加在文末",
          "description": "文档变长，两套内容并存"
        },
        {
          "label": "保留旧正文，另建新文档",
          "description": "一论文两文档"
        }
      ]
    }
  ]
}
结果
{
  "content": [
    {
      "type": "text",
      "text": "Questionnaire ask_4136dcbf7d48e5113129282b is waiting for the local user. Stop this turn until the user replies."
    }
  ],
  "details": {
    "request_id": "ask_4136dcbf7d48e5113129282b",
    "schema_version": 2,
    "step_count": 1,
    "waiting_for_user": true
  },
  "terminate": true
}