[mdns-mdnssd] fix `kDNSServiceFlagsMoreComing` flag handling (part 2) (#1133)
[mdns-mdnssd] fix `kDNSServiceFlagsMoreComing` flag handling (part 2) (#1133)

kDNSServiceFlagsMoreComing is meant to make UI rendering more
efficient. It has nothing to do with whether there will be more A or
AAAA RR records.
openthread/borderrouter,openthread/ot-br-posix,openthread/borderrouter,openthread/ot-br-posix,openthread/borderrouter,openthread/borderrouter,openthread/ot-br-posix,openthread/ot-br-posix,openthread/borderrouter,openthread/borderrouter,openthread/ot-br-posix,openthread/ot-br-posix