Add log to RemoteTargetGluer to determine which array is empty.

Bug: 199658495
Change-Id: I069044d8ee0173fa3870f48d50374c634e0d58d7
diff --git a/quickstep/src/com/android/quickstep/RemoteTargetGluer.java b/quickstep/src/com/android/quickstep/RemoteTargetGluer.java
index 7ef4d19..825abed 100644
--- a/quickstep/src/com/android/quickstep/RemoteTargetGluer.java
+++ b/quickstep/src/com/android/quickstep/RemoteTargetGluer.java
@@ -94,6 +94,9 @@
     public RemoteTargetHandle[] assignTargetsForSplitScreen(RemoteAnimationTargets targets) {
         int[] splitIds = LauncherSplitScreenListener.INSTANCE.getNoCreate()
                 .getRunningSplitTaskIds();
+        Log.d(TAG, "splitIds length: " + splitIds.length
+                + " targetAppsLength: " + targets.apps.length
+                + " remoteHandlesLength: " + mRemoteTargetHandles.length);
         if (splitIds.length == 0 && mRemoteTargetHandles.length > 1) {
             // There's a chance that between the creation of this class and assigning targets,
             // LauncherSplitScreenListener may have received callback that removes split