This feature can import Model Driven, Canvas app, and Power Automate flow at once.
How to get Power Apps Solution file
Go to Microsoft Power Apps tool under your M365 account, and click on Solutions tab:
Create or select your solution that can contain Canvas, Power Automate, or all. Export and download it to your local storage.
How to import Solution file via DesignKit 2.5
After download, you can go to Figma, run the plugin, and click on "+ADD ZIP" file.
The plugin automatically recognise what kind of app type you included in your Solution file. The output looks like this: