Fix that the user has no way of knowing if the reset was successful.

Goal:
Added the new confirm dialog into to warn users.

Bug: 220126995
Bug: 222419452
Test: make RunSettingsRoboTests ROBOTEST_FILTER=TextReadingResetControllerTest
Change-Id: Id6e3ebdd6e9990996a5a4f12d9d19e28d3d58a13

src/com/android/settings/accessibility/AccessibilityDialogUtils.java

@@ -119,6 +119,11 @@ public class AccessibilityDialogUtils {
          * launch tutorial.
          */
         int LAUNCH_ACCESSIBILITY_TUTORIAL = 1008;
+
+        /**
+         * OPEN: Settings > Accessibility > Display size and text > Click 'Reset settings' button.
+         */
+        int DIALOG_RESET_SETTINGS = 1009;
     }
 
     /**