Refactor UseOpenWifiPreferenceController into TogglePreferenceController

UseOpenWifiPreferenceController 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
      UseOpenWifiPreferenceControllerTest

Change-Id: Ie52e79fd0bc66a227bd46f09c74d1fbec614f636