[Provider Model] Show Wi-Fi icon with exclamation mark

- Show Wi-Fi icon with exclamation mark if the Wi-Fi has no the internet
access (e.g. Printer/GoPro cases).

- If the Wi-Fi network is the default network from ConnectivityManager,
then the Wi-Fi should be available for the internet access.

Bug: 192923176
Test: manual test
atest -c InternetAdapterTest \
         InternetDialogControllerTest \
         InternetDialogTest
Change-Id: I7239d56b1ad394950f61f51779f0dac611aeddea
Merged-In: I7239d56b1ad394950f61f51779f0dac611aeddea
(cherry picked from commit a51e9f50)