[Provider Model] Add connected ethernet network to internet panel

- Show the connected ethernet network to first item of internet panel

- Screenshot:
  https://screenshot.googleplex.com/teritCBuvxxSyr6

Bug: 176796623
Test: manual test
- atest NetworkProviderWorkerTest \
        ProviderModelSliceTest

Change-Id: I423a7951f403bf86c288da52fc342520fd24f466