[Bug] 生成标题的模型 about chatgpt-next-web

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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.