Remove disruptive announcement when exiting folder

Accessibility announcement needs to be disabled when folder is closing

Test: Manual
Flag: EXEMPT bug fix
Fix: 383248901
Change-Id: Ie6077a1214c234946bc9fb59ce54dfa7107188bd

src/com/android/launcher3/folder/Folder.java

@@ -680,6 +680,7 @@ public class Folder extends AbstractFloatingView implements ClipPathView, DragSo
         closeOpenFolder(openFolder);
 
         mContent.bindItems(items);
+        mContent.setCanAnnouncePageDescriptionForFolder(true);
         centerAboutIcon();
         mItemsInvalidated = true;
         updateTextViewFocus();
@@ -813,6 +814,7 @@ public class Folder extends AbstractFloatingView implements ClipPathView, DragSo
     @Override
     protected void handleClose(boolean animate) {
         mIsOpen = false;
+        mContent.setCanAnnouncePageDescriptionForFolder(false);
 
         if (!animate && mCurrentAnimator != null && mCurrentAnimator.isRunning()) {
             mCurrentAnimator.cancel();