Merge "Disappearing UDFPS view when dragging down on lockscreen" into sc-dev am: b436fb9f am: 9b7915ea

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15054864

Change-Id: I097063c94375ef38e3b2c029c1df87f4f4c71466