### 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)
Ref<InputEventScreenTouch> st = ev;
		if (st.is_valid()) {
			pos = st->get_position();
		}
		if (ss2d) {
			
			uint64_t frame = get_tree()->get_frame();
			PhysicsDirectSpaceState2D::ShapeResult res[64];
			for (const CanvasLayer *E : canvas_layers) {
				Transform2D canvas_layer_transform;
				ObjectID canvas_layer_id;
				if (E) {
					
					canvas_layer_transform = E->get_final_transform();
					canvas_layer_id = E->get_instance_id();
				} else {
					
					canvas_layer_transform = get_canvas_transform();
					canvas_layer_id = ObjectID();
				}
				Vector2 point = canvas_layer_transform.affine_inverse().xform(pos);
				PhysicsDirectSpaceState2D::PointParameters point_params;
				point_params.position = point;
				point_params.canvas_instance_id = canvas_layer_id;
				point_params.collide_with_areas = true;
				point_params.pick_point = true;
				int rc = ss2d->intersect_point(point_params, res, 64);
				if (physics_object_picking_sort) {
					struct ComparatorCollisionObjects {
						bool operator()(const PhysicsDirectSpaceState2D::ShapeResult &p_a, const PhysicsDirectSpaceState2D::ShapeResult &p_b) const {