Ui show "No connection" when WiFi is turned on and no available network

Follow this table to display the UI.
https://docs.google.com/spreadsheets/d/1w7R7Q3EXkep7iO4VcgioNp00DWas3Xve5i1rWexAkz8/edit#gid=954295315
Bug: 183593681
Test: atest ProviderModelSliceTest
atest ProviderModelSliceHelperTest
atest InternetConnectivityPanelTest
make RunSettingsRoboTests -j

Change-Id: I103f9b2fafe4fc543452a74b7ee7b2e537f879b5