[thci] fix THCI issue on Thread Dev Harness 1.1 (#6745)
[thci] fix THCI issue on Thread Dev Harness 1.1 (#6745)


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