Refactor NotifyOpenNetworksPreferenceControllerTest into TogglePreferenceController

NotifyOpenNetworksPreferenceControllerTest is essentially reimplementing TogglePreferenceController.

Add below 2 changes for test failure of CodeInspectionTest

1. Remove some arguments from constructor of the controller
2. Declare the controller in xml instead of in code

Bug: 132391311
Test: manual
      NotifyOpenNetworksPreferenceControllerTestTest

Change-Id: Icda870ef0b90aacbacfe588b23d1b28d2b60941c