UI does not scale correctly in high DPI screens (Win 11)

[Kompootor]

Describe the bug
The application text and interface, menus, etc, are all unusably small on a high-DPI high-scaling screen on Windows 11. (Default settings: 16" 3840x2400 with Windows default scaled to 250%). This is seen with a lot of older Windows apps.

To Reproduce
On Windows 11:

1. Go to Settings -> Display -> Scale = 250%
2. Confirm that dupeGuru's application interface does not scale appropriately with the size of Windows's UI, including the application window title bar.

Expected behavior
App UI should be roughly the same size as Windows UI features (like the title bar font) at all global scale settings.

Desktop (please complete the following information):

• Win 11 Home, Desktop
• 22631.3447

Other

• 16" 16:10 laptop display, 3840x2400, 250% scale default settings
• Possibly related to Font Size #1132