Support launcher animations in new transition system

Hook up the shell-transitions RemoteTransition to
launcher.

Bug: 169035082
Test: Launch an app from a launcher icon and observe
Change-Id: Ie327c11bbc59f19fb969f159f8380c10e4a84e50
diff --git a/src/com/android/launcher3/Launcher.java b/src/com/android/launcher3/Launcher.java
index 5b55c4b..0274775 100644
--- a/src/com/android/launcher3/Launcher.java
+++ b/src/com/android/launcher3/Launcher.java
@@ -1596,6 +1596,7 @@
 
         mOverlayManager.onActivityDestroyed(this);
         mAppTransitionManager.unregisterRemoteAnimations();
+        mAppTransitionManager.unregisterRemoteTransitions();
         mUserChangedCallbackCloseable.close();
         mLifecycleRegistry.setCurrentState(Lifecycle.State.DESTROYED);
         mLiveSearchManager.stop();