Show back button when a floating view is visible

Bug: 74184060
Bug: 74243869
Change-Id: I3b1806e10d3f910ce3a8a980c2b1e0609e01582b
diff --git a/src/com/android/launcher3/dragndrop/DragLayer.java b/src/com/android/launcher3/dragndrop/DragLayer.java
index 301070c..f5d0b24 100644
--- a/src/com/android/launcher3/dragndrop/DragLayer.java
+++ b/src/com/android/launcher3/dragndrop/DragLayer.java
@@ -709,12 +709,14 @@
     public void onViewAdded(View child) {
         super.onViewAdded(child);
         updateChildIndices();
+        UiFactory.onLauncherStateOrFocusChanged(mLauncher);
     }
 
     @Override
     public void onViewRemoved(View child) {
         super.onViewRemoved(child);
         updateChildIndices();
+        UiFactory.onLauncherStateOrFocusChanged(mLauncher);
     }
 
     @Override