### 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)
ClassDB::bind_method(D_METHOD("set_position", "position"), &Window::set_position);
	ClassDB::bind_method(D_METHOD("get_position"), &Window::get_position);
	ClassDB::bind_method(D_METHOD("set_size", "size"), &Window::set_size);
	ClassDB::bind_method(D_METHOD("get_size"), &Window::get_size);
	ClassDB::bind_method(D_METHOD("reset_size"), &Window::reset_size);
	ClassDB::bind_method(D_METHOD("get_position_with_decorations"), &Window::get_position_with_decorations);
	ClassDB::bind_method(D_METHOD("get_size_with_decorations"), &Window::get_size_with_decorations);
	ClassDB::bind_method(D_METHOD("set_max_size", "max_size"), &Window::set_max_size);
	ClassDB::bind_method(D_METHOD("get_max_size"), &Window::get_max_size);
	ClassDB::bind_method(D_METHOD("set_min_size", "min_size"), &Window::set_min_size);
	ClassDB::bind_method(D_METHOD("get_min_size"), &Window::get_min_size);
	ClassDB::bind_method(D_METHOD("set_mode", "mode"), &Window::set_mode);
	ClassDB::bind_method(D_METHOD("get_mode"), &Window::get_mode);
	ClassDB::bind_method(D_METHOD("set_flag", "flag", "enabled"), &Window::set_flag);
	ClassDB::bind_method(D_METHOD("get_flag", "flag"), &Window::get_flag);
	ClassDB::bind_method(D_METHOD("is_maximize_allowed"), &Window::is_maximize_allowed);
	ClassDB::bind_method(D_METHOD("request_attention"), &Window::request_attention);
	ClassDB::bind_method(D_METHOD("move_to_foreground"), &Window::move_to_foreground);
	ClassDB::bind_method(D_METHOD("set_visible", "visible"), &Window::set_visible);
	ClassDB::bind_method(D_METHOD("is_visible"), &Window::is_visible);
	ClassDB::bind_method(D_METHOD("hide"), &Window::hide);
	ClassDB::bind_method(D_METHOD("show"), &Window::show);
	ClassDB::bind_method(D_METHOD("set_transient", "transient"), &Window::set_transient);
	ClassDB::bind_method(D_METHOD("is_transient"), &Window::is_transient);
	ClassDB::bind_method(D_METHOD("set_exclusive", "exclusive"), &Window::set_exclusive);
	ClassDB::bind_method(D_METHOD("is_exclusive"), &Window::is_exclusive);
	ClassDB::bind_method(D_METHOD("can_draw"), &Window::can_draw);
	ClassDB::bind_method(D_METHOD("has_focus"), &Window::has_focus);
	ClassDB::bind_method(D_METHOD("grab_focus"), &Window::grab_focus);
	ClassDB::bind_method(D_METHOD("set_ime_active", "active"), &Window::set_ime_active);