Merge "Ensure integrity of sim-settings backupfile with AtomicFile." into sc-dev am: 7f98e18768

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/providers/TelephonyProvider/+/14456865

Change-Id: I75e016fe086b4171a461c5900073ac15ba8d3bdc