RESTRICT AUTOMERGE Make VPN by Google One always appear in VPN settings

Bug: 233559781
Test: manually test
Change-Id: I175ab126ff92f773ab25a1fa64e4262b324fd353

src/com/android/settings/vpn2/AdvancedVpnFeatureProviderImpl.java

@@ -41,4 +41,9 @@ public class AdvancedVpnFeatureProviderImpl implements AdvancedVpnFeatureProvide
     public String getVpnPreferenceGroupTitle(Context context) {
         return null;
     }
+
+    @Override
+    public boolean isAdvancedVpnRemovable() {
+        return true;
+    }
 }