Remove restricted icon in SettingsMainSwitchBar

- display disable status directly
- click disabled MainSwitchBar will show devicepolicy dialog
- make sure BT and location use MainSwitchBar correctly

Bug: 260406688
Test: manual
Change-Id: I8bb57213eec6dd5e991af580e1a06ebf8a867c28

src/com/android/settings/bluetooth/BluetoothEnabler.java

@@ -223,7 +223,6 @@ public final class BluetoothEnabler implements SwitchWidgetController.OnSwitchCh
         mSwitchController.setDisabledByAdmin(admin);
         if (admin != null) {
             mSwitchController.setChecked(false);
-            mSwitchController.setEnabled(false);
         }
         return admin != null;
     }