Fix race condition in initializing ada_planning_scene

Author: amalnanavati

ada_planning_scene/ada_planning_scene/ada_planning_scene.py

@@ -257,8 +257,15 @@ def parameter_callback(self, params: List[Parameter]) -> SetParametersResult:
                 self.__namespace_to_use = namespace_to_use
                 self.__initializer.namespace_to_use = namespace_to_use
                 self.__workspace_walls.namespace_to_use = namespace_to_use
-                self.__update_from_face_detection.namespace_to_use = namespace_to_use
-                self.__update_from_table_detection.namespace_to_use = namespace_to_use
+                # The hasattr is necessary in case this gets called before initialization is complete
+                if hasattr(self, "__update_from_face_detection"):
+                    self.__update_from_face_detection.namespace_to_use = (
+                        namespace_to_use
+                    )
+                if hasattr(self, "__update_from_table_detection"):
+                    self.__update_from_table_detection.namespace_to_use = (
+                        namespace_to_use
+                    )
 
                 # Re-initialize the planning scene
                 self.initialize()