GdkWin32: Scale text like in GTK3 with SYSTEM_DPI_AWARENESS
Right now we only support system-DPI-awareness in GTK4. In that case it makes sense to scale for DPI as done in GTK3.
We plan to have full support for fractional scaling in GDK/Win32. Once that happens the "gtk-xft-dpi"
setting will be used as it was really intended for, i.e. for text magnification, as an a11y feature.
Fixes #4187 (closed)
Edited by Luca Bacci