Aside from test-driving Dynasty (in Mojave), I haven’t done the following just yet. When the time comes, I’ll copy my profile and profiles.ini setting from FF ESR, over to Dynasty to see how well it handles being given a pre-existing setup.
Although FF 115ESR support was announced to be EOL’d after August, Mozilla just pushed out another minor update for it (from 115.16.1 to 115.17). This means I’ll probably remain on 115ESR for just a short while longer before making that switch for daily driving.