### 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)
if (_try_parent_dialog(p_from_node)) {
		popup(p_screen_rect);
	}
}
void Window::popup_exclusive_on_parent(Node *p_from_node, const Rect2i &p_parent_rect) {
	if (_try_parent_dialog(p_from_node)) {
		popup_on_parent(p_parent_rect);
	}
}
void Window::popup_exclusive_centered(Node *p_from_node, const Size2i &p_minsize) {
	if (_try_parent_dialog(p_from_node)) {
		popup_centered(p_minsize);
	}
}
void Window::popup_exclusive_centered_ratio(Node *p_from_node, float p_ratio) {
	if (_try_parent_dialog(p_from_node)) {
		popup_centered_ratio(p_ratio);
	}
}
void Window::popup_exclusive_centered_clamped(Node *p_from_node, const Size2i &p_size, float p_fallback_ratio) {
	if (_try_parent_dialog(p_from_node)) {
		popup_centered_clamped(p_size, p_fallback_ratio);
	}
}
Rect2i Window::fit_rect_in_parent(Rect2i p_rect, const Rect2i &p_parent_rect) const {