Merge "Fix divider bar not shown when entering split with rotation transition" into tm-dev am: 01eda66340 am: ba4d133692 am: 031c62101e

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18247768

Change-Id: I835960922fd2ab6d40263c18b3c5d1b396a1acca
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

@@ -980,6 +980,9 @@ public class StageCoordinator implements SplitLayout.SplitLayoutHandler,
                 updateUnfoldBounds();
                 return;
             }
+            // Clear the divider remote animating flag as the divider will be re-rendered to apply
+            // the new rotation config.
+            mIsDividerRemoteAnimating = false;
             mSplitLayout.update(null /* t */);
             onLayoutSizeChanged(mSplitLayout);
         }