InternetPreferenceController V2 (2/n)

Add ConnectivityRepository, when no validated connection,
show "Airplane mode is on" or "Networks available".

Bug: 339884322
Flag: com.android.settings.flags.internet_preference_controller_v2
Test: manual - on Internet
Test: unit test
Change-Id: I227d896fd52c099fb6d58a7ab60e98983fdab8cf