Window is incorrectly moved to the top left corner of the screen when restoring from full screen on high dpi setups.

I narrowed it down to this submit: "Windows QPA: Better recover from removed screens when fullscreen" 8afc6146be513e7adee6e4ade342e28951bfefc6 https://codereview.qt-project.org/c/qt/qtbase/+/187740

It seems to have been incorrectly implemented where the high dpi conversion is made in the wrong place, one of which was fixed in "Windows QPA: Compare against correct geometry when checking for fullscreen" 216da37cc55c38a9901501ecb04f768ff4e78d8f https://codereview.qt-project.org/c/qt/qtbase/+/200302 . The QPlatformScreen returns native pixels while the QScreen returns scaled pixels.

I would also like to question if the original change to move the window is even a good change? It feels like the wrong place and time to make sure the window is within the screen?

Repro steps:

1. Run the attached example.
2. Move it to the lower/right part of a screen with scaling > 1
3. Toggle fullscreen on with the toggle fullscreen button.
4. Toggle fullscreen off and notice that the window is now in the upper right corner.

Single screen with 200% scaling.

qtdiag output (unsure why it says dpi scaling is inactive when it is in fact active):

Screens: 1, High DPI scaling: inactive
# 0 "\\.\DISPLAY1" Depth: 32 Primary: yes
  Manufacturer: 
  Model: 
  Serial number: 
  Geometry: 3000x2000+0+0 Available: 3000x1940+0+0
  Physical size: 285x190 mm  Refresh: 60 Hz Power state: 0
  Physical DPI: 267.368,267.368 Logical DPI: 192,192 Subpixel_None
  DevicePixelRatio: 1 Pixel density: 1
  Primary orientation: 2 Orientation: 2 Native orientation: 0 OrientationUpdateMask: 0