Add test case for CrossSimCallingPreferenceControllerTest

Test is currently failing due to no methods present. Since we want
the controller to be unavailable for now, I chose to write a method
verifying that state.

Bug: 174566774
Test: atest -c CrossSimCallingPreferenceControllerTest
Change-Id: Iced0ac7bbd3482907312182a632dcf3215c55391