Swipe for notification should be default-on in settings app

Fixes: 37672954

Test: adb shell settings delete secure system_navigation_keys_enabled
delete/toggle the setting above between null/0/1

Change-Id: I310bfbde3a7d4df58ebdec85d57c4d39ff4972e1

src/com/android/settings/gestures/SwipeToNotificationPreferenceController.java

@@ -60,7 +60,7 @@ public class SwipeToNotificationPreferenceController extends GesturePreferenceCo
     @Override
     protected boolean isSwitchPrefEnabled() {
         return Settings.Secure.getInt(mContext.getContentResolver(),
-                Settings.Secure.SYSTEM_NAVIGATION_KEYS_ENABLED, 0)
+                Settings.Secure.SYSTEM_NAVIGATION_KEYS_ENABLED, 1)
                 == 1;
     }
 }