### 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)
p_list->push_back(PropertyInfo(Variant::COLOR, PNAME("theme_override_colors") + String("/") + E, PROPERTY_HINT_NONE, "", usage));
		}
	}
	{
		List<StringName> names;
		default_theme->get_constant_list(get_class_name(), &names);
		for (const StringName &E : names) {
			uint32_t usage = PROPERTY_USAGE_EDITOR | PROPERTY_USAGE_CHECKABLE;
			if (theme_constant_override.has(E)) {
				usage |= PROPERTY_USAGE_STORAGE | PROPERTY_USAGE_CHECKED;
			}
			p_list->push_back(PropertyInfo(Variant::INT, PNAME("theme_override_constants") + String("/") + E, PROPERTY_HINT_RANGE, "-16384,16384", usage));
		}
	}
	{
		List<StringName> names;
		default_theme->get_font_list(get_class_name(), &names);
		for (const StringName &E : names) {
			uint32_t usage = PROPERTY_USAGE_EDITOR | PROPERTY_USAGE_CHECKABLE;
			if (theme_font_override.has(E)) {
				usage |= PROPERTY_USAGE_STORAGE | PROPERTY_USAGE_CHECKED;
			}
			p_list->push_back(PropertyInfo(Variant::OBJECT, PNAME("theme_override_fonts") + String("/") + E, PROPERTY_HINT_RESOURCE_TYPE, "Font", usage));
		}
	}
	{
		List<StringName> names;
		default_theme->get_font_size_list(get_class_name(), &names);
		for (const StringName &E : names) {
			uint32_t usage = PROPERTY_USAGE_EDITOR | PROPERTY_USAGE_CHECKABLE;