### 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
_find_canvas_items_in_rect(p_rect, p_node->get_child(i), r_items, ci->get_transform(), p_canvas_xform);
				}
			} else {
				CanvasLayer *cl = Object::cast_to<CanvasLayer>(p_node);
				_find_canvas_items_in_rect(p_rect, p_node->get_child(i), r_items, Transform2D(), cl ? cl->get_transform() : p_canvas_xform);
			}
		}
	}
	if (ci && ci->is_visible_in_tree() && !locked && editable) {
		Transform2D xform = p_canvas_xform;
		if (!ci->is_set_as_top_level()) {
			xform *= p_parent_xform;
		}
		xform *= ci->get_transform();
		if (ci->_edit_use_rect()) {
			Rect2 rect = ci->_edit_get_rect();
			if (p_rect.has_point(xform.xform(rect.position)) &&
					p_rect.has_point(xform.xform(rect.position + Vector2(rect.size.x, 0))) &&
					p_rect.has_point(xform.xform(rect.position + Vector2(rect.size.x, rect.size.y))) &&
					p_rect.has_point(xform.xform(rect.position + Vector2(0, rect.size.y)))) {
				r_items->push_back(ci);
			}
		} else {
			if (p_rect.has_point(xform.xform(Point2()))) {
				r_items->push_back(ci);
			}
		}
	}
}
bool CanvasItemEditor::_select_click_on_item(CanvasItem *item, Point2 p_click_pos, bool p_append) {