successful authentication.
Fully tearing down Wi-Fi was a bit optimistic, as the AP list can
technically still be up, so the user might want to try again and/or
connect to another AP.
Fix#5912, regression since #4616.
The reasoning behind #4616 doesn't really apply anymore anyway, as the
Wi-Fi prompt now handles this inconsistent state properly.
The whole codepath should be *extremely* rare anyway (and/or require
super-broken network conditions).
9e9a87434b