Merge "Add confirmation dialog for system locale change." into udc-dev am: 39129e09

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Settings/+/21740799



Change-Id: I0e603ed199f26e043502408da66f12c71280309b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>