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: I85c4ae2ed8626508dba5c98e32646a592ea7c125