[BugFix]: Hermes tool parser stream output error #19056

[LiuLi1998]

FIX: #19056

[github-actions]

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[LiuLi1998]

@aarnphm Could you please review the code, thanks.

[qq745639151]

我尝试了下这个修复，使用langchain进行模型请求，流式输出情况下，偶尔会输出如下字段:
iNdEx {"name": "tool_9d5e7cec5025417b86d2ecb860787761", "arguments": {"query": "2025年6月1日各地区的电力负荷数据"}} </tool_call> 。

模型使用的是千问2.5-14b