[cellular] When no APN is listed, autodetection button will not show a UI indication of button press
When no APNs are listed in the UI (as in all of them were deleted), the Autodetect APN button will not show a blue highlight that it was tapped
When no APNs are listed in the UI (as in all of them were deleted), the Autodetect APN button will not show a blue highlight that it was tapped