PIP: Update visibility when exits PIP mode

Bug: 31898978
Change-Id: I254584e399016a2d2d0dc22578def4e6d3d927af
diff --git a/packages/SystemUI/src/com/android/systemui/tv/pip/PipManager.java b/packages/SystemUI/src/com/android/systemui/tv/pip/PipManager.java
index 085e003..53a54d6 100644
--- a/packages/SystemUI/src/com/android/systemui/tv/pip/PipManager.java
+++ b/packages/SystemUI/src/com/android/systemui/tv/pip/PipManager.java
@@ -298,6 +298,7 @@
             mListeners.get(i).onMoveToFullscreen();
         }
         resizePinnedStack(mState);
+        updatePipVisibility(false);
     }
 
     /**