Merge "Remove portrait flag from handoff activity." into sc-v2-dev am: 9220a46cc2 am: 5636794cbe

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Settings/+/16367697

Change-Id: Iff8aa009cbe8ccf24e3dcb0bab11d9cf8fdd2416