### Godot version

v4.0.beta17.official [c40020513]

### System information

macOS 13.0.1

### Issue description

When a `Control` node is over a `SubViewportContainer` (with a `SubViewport` as a child), both in Full Rect anchors, asking for the get_viewport().get_mouse_position() from a scene inside the `SubViewport` returns (0, 0) as the position of the mouse.

This wasn't happening in at least Beta 15. I was getting the mouse position without any problems before Beta 17. I didn't try Beta 16.

### Steps to reproduce

1. Create a `Control` node
2. Add two children: A `SubViewportContainer` and a `Control` node
3. Put both in Full Rect anchors so the `Control` node (child) is covering the `SubViewportContainer`
4. Ask for the get_viewport().get_mouse_position() from inside a scene of the `SubViewport`

As you can see in this screenshot: asking for the mouse position from inside the `Node2D` script always returns (0, 0).

<img width="1533" alt="SubViewportContainerIssue" src="https://user-images.githubusercontent.com/91340577/217051768-d9c2e8ad-40ca-4c6d-bb98-f6a7c9c6081f.png">

Only If the `Control` (child) mouse filtering is set to _Ignore_ you can get the mouse position. But with that you are losing the mouse inputs from that `Control` node.

You can find the setup of these nodes in the MRP.


### Minimal reproduction project

Run the main scene (control.tscn) and move the mouse around the screen. Look for the print in the Output tab.

[SubViewportMousePositionIssue.zip](https://github.com/godotengine/godot/files/10667894/SubViewportMousePositionIssue.zip)
#ifdef TOOLS_ENABLED
	return (Engine::get_singleton()->is_editor_hint() && get_tree()->get_edited_scene_root() && (get_tree()->get_edited_scene_root()->is_ancestor_of(this) || get_tree()->get_edited_scene_root() == this));
#else
	return false;
#endif
}
void Window::_make_window() {
	ERR_FAIL_COND(window_id != DisplayServer::INVALID_WINDOW_ID);
	uint32_t f = 0;
	for (int i = 0; i < FLAG_MAX; i++) {
		if (flags[i]) {
			f |= (1 << i);
		}
	}
	DisplayServer::VSyncMode vsync_mode = DisplayServer::get_singleton()->window_get_vsync_mode(DisplayServer::MAIN_WINDOW_ID);
	Rect2i window_rect;
	if (initial_position == WINDOW_INITIAL_POSITION_ABSOLUTE) {
		window_rect = Rect2i(position, size);
	} else if (initial_position == WINDOW_INITIAL_POSITION_CENTER_PRIMARY_SCREEN) {
		window_rect = Rect2i(DisplayServer::get_singleton()->screen_get_position(DisplayServer::SCREEN_PRIMARY) + (DisplayServer::get_singleton()->screen_get_size(DisplayServer::SCREEN_PRIMARY) - size) / 2, size);
	} else if (initial_position == WINDOW_INITIAL_POSITION_CENTER_MAIN_WINDOW_SCREEN) {
		window_rect = Rect2i(DisplayServer::get_singleton()->screen_get_position(DisplayServer::SCREEN_OF_MAIN_WINDOW) + (DisplayServer::get_singleton()->screen_get_size(DisplayServer::SCREEN_OF_MAIN_WINDOW) - size) / 2, size);
	} else if (initial_position == WINDOW_INITIAL_POSITION_CENTER_OTHER_SCREEN) {
		window_rect = Rect2i(DisplayServer::get_singleton()->screen_get_position(current_screen) + (DisplayServer::get_singleton()->screen_get_size(current_screen) - size) / 2, size);
	}
	window_id = DisplayServer::get_singleton()->create_sub_window(DisplayServer::WindowMode(mode), vsync_mode, f, window_rect);
	ERR_FAIL_COND(window_id == DisplayServer::INVALID_WINDOW_ID);
	DisplayServer::get_singleton()->window_set_max_size(Size2i(), window_id);
	DisplayServer::get_singleton()->window_set_min_size(Size2i(), window_id);
	DisplayServer::get_singleton()->window_set_mouse_passthrough(mpath, window_id);