when opening theseus next time, the video resolution when it's in borderless mode; the display gets stretch.

another bug but i don't think this is far important, just enhancement for handling the graphics setting next time

here's the screen in borderless with the stretch mode:

<img width="1280" height="1015" alt="Image" src="https://github.com/user-attachments/assets/cb682968-58e3-4903-a8ad-a9d5be71cb1c" />