### 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_msaa_2d", "msaa"), &Viewport::set_msaa_2d);
	ClassDB::bind_method(D_METHOD("get_msaa_2d"), &Viewport::get_msaa_2d);
	ClassDB::bind_method(D_METHOD("set_msaa_3d", "msaa"), &Viewport::set_msaa_3d);
	ClassDB::bind_method(D_METHOD("get_msaa_3d"), &Viewport::get_msaa_3d);
	ClassDB::bind_method(D_METHOD("set_screen_space_aa", "screen_space_aa"), &Viewport::set_screen_space_aa);
	ClassDB::bind_method(D_METHOD("get_screen_space_aa"), &Viewport::get_screen_space_aa);
	ClassDB::bind_method(D_METHOD("set_use_taa", "enable"), &Viewport::set_use_taa);
	ClassDB::bind_method(D_METHOD("is_using_taa"), &Viewport::is_using_taa);
	ClassDB::bind_method(D_METHOD("set_use_debanding", "enable"), &Viewport::set_use_debanding);
	ClassDB::bind_method(D_METHOD("is_using_debanding"), &Viewport::is_using_debanding);
	ClassDB::bind_method(D_METHOD("set_use_occlusion_culling", "enable"), &Viewport::set_use_occlusion_culling);
	ClassDB::bind_method(D_METHOD("is_using_occlusion_culling"), &Viewport::is_using_occlusion_culling);
	ClassDB::bind_method(D_METHOD("set_debug_draw", "debug_draw"), &Viewport::set_debug_draw);
	ClassDB::bind_method(D_METHOD("get_debug_draw"), &Viewport::get_debug_draw);
	ClassDB::bind_method(D_METHOD("get_render_info", "type", "info"), &Viewport::get_render_info);
	ClassDB::bind_method(D_METHOD("get_texture"), &Viewport::get_texture);
	ClassDB::bind_method(D_METHOD("set_physics_object_picking", "enable"), &Viewport::set_physics_object_picking);
	ClassDB::bind_method(D_METHOD("get_physics_object_picking"), &Viewport::get_physics_object_picking);
	ClassDB::bind_method(D_METHOD("set_physics_object_picking_sort", "enable"), &Viewport::set_physics_object_picking_sort);
	ClassDB::bind_method(D_METHOD("get_physics_object_picking_sort"), &Viewport::get_physics_object_picking_sort);
	ClassDB::bind_method(D_METHOD("get_viewport_rid"), &Viewport::get_viewport_rid);
	ClassDB::bind_method(D_METHOD("push_text_input", "text"), &Viewport::push_text_input);
	ClassDB::bind_method(D_METHOD("push_input", "event", "in_local_coords"), &Viewport::push_input, DEFVAL(false));
	ClassDB::bind_method(D_METHOD("push_unhandled_input", "event", "in_local_coords"), &Viewport::push_unhandled_input, DEFVAL(false));
	ClassDB::bind_method(D_METHOD("get_camera_2d"), &Viewport::get_camera_2d);
	ClassDB::bind_method(D_METHOD("set_as_audio_listener_2d", "enable"), &Viewport::set_as_audio_listener_2d);
	ClassDB::bind_method(D_METHOD("is_audio_listener_2d"), &Viewport::is_audio_listener_2d);
	ClassDB::bind_method(D_METHOD("get_mouse_position"), &Viewport::get_mouse_position);
	ClassDB::bind_method(D_METHOD("warp_mouse", "position"), &Viewport::warp_mouse);
	ClassDB::bind_method(D_METHOD("gui_get_drag_data"), &Viewport::gui_get_drag_data);