bsdinstall wifi setup is broken on CURRENT

I saw some users on a .br group complaining bsdinstall was failing to 
setup wifi network on 15.0 snapshots and tried it myself.  I was able to 
reproduce the problem and also noticed another one.

I noticed Network Selection screen only shows one line, it's not 
beautiful to navigate through items this way.  On 14.1-BETA2 it shows 
multiple lines so it seems to be a regression.

The problem users reported was: after selecting desired network it just 
starts over instead of asking for password.  I made a video [1] showing 
the problem.

Jessica, I've cc'd you because git shows you were the last person making 
changes in this area.  If it's not related and I made a mistake, just 
ignore me.

[1] https://youtube.com/shorts/Gmeckokw2a0
-- 
Renato Botelho