Resolve DNS64 hostname with Private DNS bypass

Test: as follows
    - builds
    - flashes
    - boots
    - runtest -x external/android-clat/clatd_test.cpp passes
Bug: 64133961
Bug: 72345192

Change-Id: If5238d0cdf27cb4cd689e1ff1ff776bc638d5a7b
2 files changed