[Provider model] Add "See all" text link to Internet Panel

- Add "See all" text link at the bottom of the network providers list
  - Don't show "See all" text link if the Wi-Fi network is empty

Bug: 188710392
Test: manual test
atest -c ProviderModelSliceTest

Change-Id: If99c1e6597b4d2ef6a916fbdab3df9cfad8b464e