Fix sslh in Additional Software test suite on Bullseye
Let's wait for Jenkins opinion.
I have locally tested that I am warned I can not use Additional Software when I start Tails from a DVD and install a package (features/additional_software_packages.feature:14
) reports no error in the journal about sslh not being able to start.
This does not mean that Remote shell / Tor Browser / Dogtail interactio... (#18852) will be solved by this MR.
Closes Additional Software test suite is broken on Bul... (#18903 - closed)