Make BadgedImageView selectable when talkback is on

The bubble icons can be focused when using a11y service.

Bug: 152009675
Test: manual test
Change-Id: I39e0a6ea6f1d47fa266e9675d7020fbfd1b48235

packages/SystemUI/src/com/android/systemui/bubbles/BadgedImageView.java

@@ -98,6 +98,8 @@ public class BadgedImageView extends ImageView {
         Path iconPath = PathParser.createPathFromPathData(
                 getResources().getString(com.android.internal.R.string.config_icon_mask));
         mDotRenderer = new DotRenderer(mBubbleBitmapSize, iconPath, DEFAULT_PATH_SIZE);
+
+        setFocusable(true);
     }
 
     /**