Merge pull request #15191 from Jerome67000/z_renaming

renames "z" Node2D property to "z_index"

scene/2d/collision_shape_2d.cpp

@@ -64,7 +64,7 @@ void CollisionShape2D::_notification(int p_what) {
 			/*if (Engine::get_singleton()->is_editor_hint()) {
 				//display above all else
 				set_z_as_relative(false);
-				set_z(VS::CANVAS_ITEM_Z_MAX - 1);
+				set_z_index(VS::CANVAS_ITEM_Z_MAX - 1);
 			}*/
 
 		} break;