### Godot version

4.0.3.stable

### System information

windows 11

### Issue description

fullscreen on the window node is not working and will show up as a windowed.

### Steps to reproduce

disable Embed Subwindows in Project Settings/Display/Window.
create a window node and set its mode to fullscreen.

### Minimal reproduction project

[fullscreen.zip](https://github.com/godotengine/godot/files/11821834/fullscreen.zip)
_THREAD_SAFE_METHOD_
	EnumPosData data = { 0, 0, Point2() };
	EnumDisplayMonitors(nullptr, nullptr, _MonitorEnumProcOrigin, (LPARAM)&data);
	return data.pos;
}
Point2i DisplayServerWindows::screen_get_position(int p_screen) const {
	_THREAD_SAFE_METHOD_
	p_screen = _get_screen_index(p_screen);
	EnumPosData data = { 0, p_screen, Point2() };
	EnumDisplayMonitors(nullptr, nullptr, _MonitorEnumProcPos, (LPARAM)&data);
	return data.pos - _get_screens_origin();
}
typedef struct {
	int count;
	int screen;
	Size2 size;
} EnumSizeData;
typedef struct {
	int count;
	int screen;
	Rect2i rect;
} EnumRectData;
typedef struct {
	int count;
	int screen;
	float rate;
} EnumRefreshRateData;
static BOOL CALLBACK _MonitorEnumProcSize(HMONITOR hMonitor, HDC hdcMonitor, LPRECT lprcMonitor, LPARAM dwData) {