bug#58011: Jitsi, Bowser, and IceCat's user agent string

[bill-auger]

On Thu, 22 Sep 2022 20:51:38 -0400 Mark wrote:
> that my Guix-built IceCat 102 sent the following user agent string:
> 
>   "Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Firefox/102.0"

mark, would you try the "sign in" button on gitlab.com - you
dont need to sign in - if you see the login form at all, that
would demonstrate that the problem is resolved - with the
"icecat" user-agent, it gets stuck on a cloudflare "browser
check" page instead