Merge "add logging for Launcher backup and restore events" into udc-qpr-dev am: 8a68138995 am: a9b0249faa

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/24310674

Change-Id: Ib3d3b8b78d30514261e904557db9b02bcc4e9e38
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>