Stop dispatching TYPE_VIEW_SELECTED a11y event on child views.

Bug: 263572235
Test: atest AccessibilityEventTest
Test: inspect A11yEvent log while expanding quick settings,
      see fewer events
Change-Id: Ib286d336f00e131387de342a259bf761bfe2b76f

core/java/android/view/View.java

@@ -25780,6 +25780,10 @@ public class View implements Drawable.Callback, KeyEvent.Callback,
      * @param selected true if the view must be selected, false otherwise
      */
     public void setSelected(boolean selected) {
+        setSelected(selected, true);
+    }
+
+    void setSelected(boolean selected, boolean sendAccessibilityEvent) {
         //noinspection DoubleNegation
         if (((mPrivateFlags & PFLAG_SELECTED) != 0) != selected) {
             mPrivateFlags = (mPrivateFlags & ~PFLAG_SELECTED) | (selected ? PFLAG_SELECTED : 0);
@@ -25787,11 +25791,13 @@ public class View implements Drawable.Callback, KeyEvent.Callback,
             invalidate(true);
             refreshDrawableState();
             dispatchSetSelected(selected);
-            if (selected) {
-                sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_SELECTED);
-            } else {
-                notifyViewAccessibilityStateChangedIfNeeded(
-                        AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED);
+            if (sendAccessibilityEvent) {
+                if (selected) {
+                    sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_SELECTED);
+                } else {
+                    notifyViewAccessibilityStateChangedIfNeeded(
+                            AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED);
+                }
             }
         }
     }

core/java/android/view/ViewGroup.java

@@ -4629,7 +4629,7 @@ public abstract class ViewGroup extends View implements ViewParent, ViewManager
         final View[] children = mChildren;
         final int count = mChildrenCount;
         for (int i = 0; i < count; i++) {
-            children[i].setSelected(selected);
+            children[i].setSelected(selected, false);
         }
     }