Use direct callback for tethering p2p localonly interface state change

Bug: 263198976
Test: atest com.android.server.wifi.p2p.WifiP2pServiceImplTest
Test: manual test with p2p test app and nearby
Change-Id: I37defe3d8a3ca266548292e494a59328ead40525
Merged-In: I37defe3d8a3ca266548292e494a59328ead40525
2 files changed