Merge "Start listening to telephony changes in #start()" am: dd2dd2baa2 am: 5e1899796f am: ad68e73f25 am: 96f2e3d873

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2222847

Change-Id: I9e2191cb54dc471bacf814e33a7b18caad397580
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>