Set visibility when alpha == viewAlpha.

Fixes: 232993553
Test: manually prevent all apps from going away on screen off, then unlock to it and swipe up
Change-Id: If2f30de9940c158b74064b3b935e38abdb8aab5f
diff --git a/src/com/android/launcher3/anim/AnimatedPropertySetter.java b/src/com/android/launcher3/anim/AnimatedPropertySetter.java
index e5f5e7c..01301f2 100644
--- a/src/com/android/launcher3/anim/AnimatedPropertySetter.java
+++ b/src/com/android/launcher3/anim/AnimatedPropertySetter.java
@@ -43,9 +43,17 @@
 
     @Override
     public Animator setViewAlpha(View view, float alpha, TimeInterpolator interpolator) {
-        if (view == null || view.getAlpha() == alpha) {
+        if (view == null) {
             return NO_OP;
         }
+
+        // Short-circuit if the view already has this alpha value, but make sure the visibility is
+        // set correctly for the requested alpha.
+        if (Float.compare(view.getAlpha(), alpha) == 0) {
+            AlphaUpdateListener.updateVisibility(view);
+            return NO_OP;
+        }
+
         ObjectAnimator anim = ObjectAnimator.ofFloat(view, View.ALPHA, alpha);
         anim.addListener(new AlphaUpdateListener(view));
         anim.setInterpolator(interpolator);