Acrylic doesn’t display on Windows 11 VM

## Describe the issue

I have a Windows 11 VM. Ever since I first set it up, windows appeared with sharp, pointy corners rather than the round ones expected. Furthermore, I have since discovered that the “Mica/Acrylic” translucency effect does not display anywhere; all surfaces are opaque, including the area behind the window tabs in the File Explorer in the below screenshot. Furthermore, the About page in System Settings says that I have no GPU and no VRAM, even though correct details are displayed in `dxdiag.exe`. I have tried updating the drivers in my VM, to no avail.

## Configuration
* UTM Version: 4.7.4 (115)
* macOS Version: 26.0.1
* Mac Chip: M4

## Debug log

[Please find attached](https://github.com/user-attachments/files/23213669/debug-log.txt).

## VM configuration file

[Please find attached](https://github.com/user-attachments/files/23213686/config.plist.txt).