### 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)
#include "display_server_windows.h"
#include "os_windows.h"
#include "core/io/marshalls.h"
#include "main/main.h"
#include "scene/resources/texture.h"
#if defined(GLES3_ENABLED)
#include "drivers/gles3/rasterizer_gles3.h"
#endif
#include <avrt.h>
#include <dwmapi.h>
#ifndef DWMWA_USE_IMMERSIVE_DARK_MODE
#define DWMWA_USE_IMMERSIVE_DARK_MODE 20
#endif
#if defined(__GNUC__)
#define GetProcAddress (void *)GetProcAddress
#endif
static String format_error_message(DWORD id) {