Merge "Only animate user list if there's multiple users" into sc-v2-dev am: 4417daeae4

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15749010

Change-Id: I7a6c27ae01683028bc9dbcc4c02c01aea275216d

packages/SystemUI/src/com/android/systemui/statusbar/policy/KeyguardUserSwitcherListView.java

@@ -103,7 +103,7 @@ public class KeyguardUserSwitcherListView extends AlphaOptimizedLinearLayout {
             }
         }
 
-        if (animate) {
+        if (animate && userItemViews.length > 1) {
             // AnimationUtils will immediately hide/show the first item in the array. Since the
             // first view is the current user, we want to manage its visibility separately.
             // Set first item to null so AnimationUtils ignores it.