Comment 16 for bug 1979244

apt install libssl-dev=3.0.2-0ubuntu1.4 should work, but you might have to force additional packages up. Certainly the error will be different.

I don't understand your config options, you already have the phased update installed, so you need the reverse of what you did to get the still-phasing libssl-dev to be installed.

And no, the implementation changed to fix the opposite corollary bug, so it applies to not-yet-installed packages as well. Where people had libssl3=...1.1 installed and then tried to install libssl-dev and it would fail because libssl-dev Depends libssl3 (= ...1.4)