Merge "Clean divider-remote-animating flag when exit split" into tm-qpr-dev am: 9bb50c30a3

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/19578569

Change-Id: I5606b31aeb2e9f3522dd132f06117473a53bb116
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>

libs/WindowManager/Shell/src/com/android/wm/shell/splitscreen/StageCoordinator.java

@@ -894,6 +894,7 @@ public class StageCoordinator implements SplitLayout.SplitLayoutHandler,
             }
         });
         mShouldUpdateRecents = false;
+        mIsDividerRemoteAnimating = false;
 
         if (childrenToTop == null) {
             mSideStage.removeAllTasks(wct, false /* toTop */);