Do not report finish in mergeAnimation...

...if the handler don't know how to process the transition.
So the Transitions can pass that transition to next handler.

Flag: NONE
Bug: 328619216
Test: manual, use alt+tab to relaunch a task where it's activity
is destroyed.

Change-Id: Idf3f78103a56e91806ec2f6e364c6e8e7f4e205c

quickstep/src/com/android/launcher3/taskbar/KeyboardQuickSwitchViewController.java

@@ -151,7 +151,8 @@ public class KeyboardQuickSwitchViewController {
                 context.getDeviceProfile().overviewPageSpacing,
                 QuickStepContract.getWindowCornerRadius(context),
                 AnimationUtils.loadInterpolator(
-                        context, android.R.interpolator.fast_out_extra_slow_in)));
+                        context, android.R.interpolator.fast_out_extra_slow_in)),
+                "SlideInTransition");
         if (mOnDesktop) {
             UI_HELPER_EXECUTOR.execute(() ->
                     SystemUiProxy.INSTANCE.get(mKeyboardQuickSwitchView.getContext())

quickstep/src/com/android/quickstep/util/SlideInRemoteTransition.kt

@@ -46,12 +46,7 @@ class SlideInRemoteTransition(
         mergeTarget: IBinder,
         finishCB: IRemoteTransitionFinishedCallback
     ) {
-
-        try {
-            finishCB.onTransitionFinished(null, Transaction())
-        } catch (e: RemoteException) {
-            // Ignore
-        }
+        // Do not report finish if we don't know how to handle this transition.
     }
 
     override fun startAnimation(