Update test to adopt new API for check network support

The isAvailable() in AbstractSimStatusImeiInfoPreferenceController
refers to Utils.isWifiOnly() which was updated in the modulization
work to refer TelephonyManager.isDataCapable(). The test here
should mock the data capable value instead of the connectivity one.

Update the usage accordingly to fix the broken test.

Test: make RunSettingsLibRoboTests \
      ROBOTEST_FILTER=SimStatusImeiInfoPreferenceControllerTest
Bug: 205788196
Change-Id: I79f6dad54cdcb1c506355a43b5c2030c93af96c8