Reset recents translation when launching

So we don't end up with empty content after having cancelled
the drag in gesture.

Change-Id: If00c526806816df58c751cd715e0575dbb7adf17
diff --git a/packages/SystemUI/src/com/android/systemui/recents/views/RecentsView.java b/packages/SystemUI/src/com/android/systemui/recents/views/RecentsView.java
index a0a1bac..7ae686e 100644
--- a/packages/SystemUI/src/com/android/systemui/recents/views/RecentsView.java
+++ b/packages/SystemUI/src/com/android/systemui/recents/views/RecentsView.java
@@ -411,6 +411,8 @@
             RecentsActivityLaunchState launchState = Recents.getConfiguration().getLaunchState();
             if (launchState.launchedViaDragGesture) {
                 setTranslationY(getMeasuredHeight());
+            } else {
+                setTranslationY(0f);
             }
         }
     }