The untrusted apps should not directly access /dev/socket/mdnsd since
API level 34 (U). Only adbd and netd should remain to have access to
/dev/socket/mdnsd. For untrusted apps running with API level 33-, they
still have access to /dev/socket/mdnsd for backward compatibility.
Bug: 265364111
Test: Manual test
Change-Id: Id37998fcb9379fda6917782b0eaee29cd3c51525
