Build MdnsResponse in ServiceTypeClient

Instead of building MdnsResponse lists in MdnsSocketClient and sending
each one to ServiceTypeClient, only parse packets in MdnsSocketClient,
and let each ServiceTypeClient build the MdnsResponse from them.

MdnsResponseDecoder already implements the same filtering that
MdnsDiscoveryManager#onResponseReceived did on the service types so this
is a no-op.

This will be useful to allow MdnsServiceTypeClient to update its
responses using records that are not necessarily part of a full
MdnsResponse; for example if a reply packet only contains address
records, or only SRV/TXT records without a PTR record.

Bug: 267570781
Test: atest
Change-Id: I8157c3732c425aae497d44c44c64b640859c13dc