Merge "Log no save ui reason if no dataset set." into tm-dev am: 30929167

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18349262



Change-Id: I8c68afe3e6fd885e6e3b44bae621ce281b7037eb
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>