Finish wrapped launcher animations if impl is gone

If the runner impl is gone (since it is a weakreference), we
still need to complete the animation contract by calling the
finish callback, so do that.

Bug: 183993924
Test: atest ActivityMetricsLoggerTests
Change-Id: Idce1859f0417cb74bbb9884e0d06750539e4545e
diff --git a/quickstep/src/com/android/launcher3/WrappedLauncherAnimationRunner.java b/quickstep/src/com/android/launcher3/WrappedLauncherAnimationRunner.java
index e319275..fcf9857 100644
--- a/quickstep/src/com/android/launcher3/WrappedLauncherAnimationRunner.java
+++ b/quickstep/src/com/android/launcher3/WrappedLauncherAnimationRunner.java
@@ -58,6 +58,8 @@
         if (animationRunnerImpl != null) {
             animationRunnerImpl.onCreateAnimation(transit, appTargets, wallpaperTargets,
                     nonAppTargets, result);
+        } else {
+            result.setAnimation(null, null);
         }
     }
 }