[cli] use `OutputPrefix()` in `Cli::Dataset` (#6699)
[cli] use `OutputPrefix()` in `Cli::Dataset` (#6699)


abtink/openthread,jwhui/openthread,openthread/openthread,srickardti/openthread,openthread/openthread,abtink/openthread,jwhui/openthread,srickardti/openthread,openthread/openthread,abtink/openthread,jwhui/openthread,srickardti/openthread,jwhui/openthread,srickardti/openthread,abtink/openthread,openthread/openthread