Merge "limit TelecomManager#registerPhoneAccount to 10" into qt-dev am: aea733a58c

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/services/Telecomm/+/16905018

Change-Id: Ib0262648dad78de42f2e8bfb44bc76937a00d5d2
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>