Merge "[SettingsProvider] verify ringtone URI before setting" into rvc-dev am: 941891258d

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/24424817

Change-Id: I60b4d8f943165bdbcc72bc1768b9d565ff24b305
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>