Merge "Initialize RadioProxy only once" into tm-dev am: 18289495 am: d5d0e20d am: 8aa25dfa

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/opt/telephony/+/18486462



Change-Id: I99d3a2583b71a16c0165ec5e2f002e05fc441279
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>