### 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
drag_to = drag_to.snapped(grid_step * Math::pow(2.0, grid_step_multiplier));
			}
			Point2 previous_pos;
			if (drag_selection.size() == 1) {
				Transform2D xform = drag_selection[0]->get_global_transform_with_canvas() * drag_selection[0]->get_transform().affine_inverse();
				previous_pos = xform.xform(drag_selection[0]->_edit_get_position());
			} else {
				previous_pos = _get_encompassing_rect_from_list(drag_selection).position;
			}
			Point2 new_pos;
			if (drag_selection.size() == 1) {
				Node2D *node_2d = Object::cast_to<Node2D>(drag_selection[0]);
				if (node_2d && move_local_base_rotated) {
					Transform2D m2;
					m2.rotate(node_2d->get_rotation());
					new_pos += m2.xform(drag_to);
				} else if (move_local_base) {
					new_pos += drag_to;
				} else {
					new_pos = previous_pos + (drag_to - drag_from);
				}
			} else {
				new_pos = previous_pos + (drag_to - drag_from);
			}
			for (CanvasItem *ci : drag_selection) {
				Transform2D xform = ci->get_global_transform_with_canvas().affine_inverse() * ci->get_transform();
				ci->_edit_set_position(ci->_edit_get_position() + xform.xform(new_pos) - xform.xform(previous_pos));
			}
		}
		return true;