Merge "Update divider if split transition with display change" into udc-dev am: 895e7a93ce

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23578870

Change-Id: I2836f7d32c20e975f72925c55c528c8897d64dad
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

@@ -2499,6 +2499,7 @@ public class StageCoordinator implements SplitLayout.SplitLayoutHandler,
             // handling to the mixed-handler to deal with splitting it up.
             if (mMixedHandler.animatePendingSplitWithDisplayChange(transition, info,
                     startTransaction, finishTransaction, finishCallback)) {
+                mSplitLayout.update(startTransaction);
                 return true;
             }
         }