[Windows] Incorrect UI scaling based on primary monitor

[Flynsarmy]

Tested versions

• Reproducible in 4.3-beta2, 4.2.2-stable

System information

Windows 11, geForce 4080, Godot 4.3-beta2, Forward+

Issue description

On Windows I have a 1440p monitor set to 100% scale and a 4k monitor set to 150% scale. Depending on which of the two is set to be my primary monitor, Godot's scaling is wildly different no matter which monitor it's on.

Example:
With the 4k monitor set to primary, this is what my 1440p screen looks like:

But with the 1440p monitor set to primary, this is what the screen looks like on the same monitor:

It doesn't matter if I drag the windows between monitors, they don't rescale to be their correct scale for the current monitor.

Steps to reproduce

• Have two monitors of varying resolutions and scales
• Open Godot with one monitor being the Windows primary monitor
• Repeat with the other monitor being the Windows primary monitor

Minimal reproduction project (MRP)

N/A

[Calinou]

Thanks for the report! Consolidating in #56341.