Fix notifications z-height when they don't have shadows.

This CL improves the animation triggered when we launch an app after
tapping a notification. See b/181654098 for after/before videos.

Bug: 181654098
Test: Manual
Change-Id: I6af80597c7e4588c2197371d6cdf18f44635cb5e

packages/SystemUI/src/com/android/systemui/statusbar/notification/row/ExpandableNotificationRow.java

@@ -2052,8 +2052,7 @@ public class ExpandableNotificationRow extends ActivatableNotificationView
                 mNotificationLaunchHeight,
                 zProgress);
         setTranslationZ(translationZ);
-        float extraWidthForClipping = params.getWidth() - getWidth()
-                + MathUtils.lerp(0, mOutlineRadius * 2, params.getProgress());
+        float extraWidthForClipping = params.getWidth() - getWidth();
         setExtraWidthForClipping(extraWidthForClipping);
         int top = params.getTop();
         float interpolation = Interpolators.FAST_OUT_SLOW_IN.getInterpolation(params.getProgress());

packages/SystemUI/src/com/android/systemui/statusbar/notification/stack/AmbientState.java

@@ -133,7 +133,7 @@ public class AmbientState {
      */
     public static int getNotificationLaunchHeight(Context context) {
         int zDistance = getZDistanceBetweenElements(context);
-        return getBaseHeight(zDistance) * 2;
+        return NOTIFICATIONS_HAVE_SHADOWS ? 2 * getBaseHeight(zDistance) : 4 * zDistance;
     }
 
     /**