Reported by @pearl plinth
Bug Report: Model selector is not working inside a project on macOS app
`Steps to Reproduce`
In macOS app, Create a project and start a chat in the project. Click the title on top bar and select a model.
`Expected Result`
It should change the model within the current chat.
`Actual Result`
Choosing a model through the model selector initiates a new chat, closing the current one.
`Environment`
macOS 15.6, CharGPT app version 1.2025.218