[dataset] do not allow Extended TLVs in Operational Dataset (#5966)
[dataset] do not allow Extended TLVs in Operational Dataset (#5966)


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