[Bug] 生成标题的模型

[QAbot-zh]

Describe the bug
使用非gpt系列模型的时候，生成标题的模型会和调用的模型同步，而不是默认使用gpt-3.5-turbo模型，这样在使用一些相对昂贵的模型的时候就吃亏了，而且自动生成标题的选项默认是打开的。能不能通过环境变量指定自动生成标题使用的模型？
调用记录截图，自下而上是调用顺序：

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Title: [Bug] Model for generating titles

Describe the bug
When using non-gpt series models, the model that generates the title will be synchronized with the called model, instead of using the gpt-3.5-turbo model by default. This will cause a disadvantage when using some relatively expensive models, and the option to automatically generate titles The default is on. Is it possible to specify the model used to automatically generate titles through environment variables?
Screenshot of the call record, the calling sequence from bottom to top:

[gitsang]

Hope to increase the model configuration for automatic titles.