### Godot version

v4.0.beta.custom_build [eaf306e0b]

### System information

Windows 10

### Issue description

Selecting a `Window` node in the Editor's SceneTree results in the message
```
editor/editor_data.cpp:1058 - Parameter "p_node" is null.
```
and the Inspector shows empty content instead of the Window's properties.

I would expect, that clicking on a node in the SceneTree lets me edit the properties of the node.

Bisecting shows that this behavior got introduced in #71770

### Steps to reproduce

1. Create a Window node
2. Click on the Window node in the Editor's SceneTree

### Minimal reproduction project

N/A
}
					if (!use_single_axis || use_y) {
						control->set_anchor(SIDE_TOP, new_anchor.y, false, true);
						control->set_anchor(SIDE_BOTTOM, new_anchor.y, false, true);
					}
					break;
				default:
					break;
			}
			return true;
		}
		
		if (drag_selection.size() >= 1 && b.is_valid() && b->get_button_index() == MouseButton::LEFT && !b->is_pressed()) {
			_commit_canvas_item_state(
					drag_selection,
					vformat(TTR("Move CanvasItem \"%s\" Anchor"), drag_selection[0]->get_name()));
			_reset_drag();
			return true;
		}
		
		if (b.is_valid() && b->get_button_index() == MouseButton::RIGHT && b->is_pressed()) {
			_restore_canvas_item_state(drag_selection);
			_reset_drag();
			viewport->queue_redraw();
			return true;
		}
	}
	return false;
}
bool CanvasItemEditor::_gui_input_resize(const Ref<InputEvent> &p_event) {