Merge "Disappearing UDFPS view when dragging down on lockscreen" into sc-dev am: b436fb9f am: 9b7915ea am: 8eb49cf8

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

Change-Id: I7a172e88f39cb99d0c7b4d39a1e4a42cb5a1f1c5