This differential add rehydrate transform that inserts {} asremoves code that was used to modify messages field in messageStoreStore on rehydrateActionType. Previously this was done when handling rehydrateActionType.Now that we do not persist messages in messageStore in redux, Now we want to remove this codemessages are always {} on rehydrateActionType, but we still need messageStore to have this field to avoid null/undefined errorsso the code never get executed.