LOL damn, just did the previously PS5 exclusive Hogsmeade quest on my PC version. Mother fuckers were holding out on us all this time, this side quest was fantastic and I'm a little annoyed that Sony paid them to keep us from having this quest for as long as they did. Anyways, I beat the game ages ago but never uninstalled it so I'm happy that I could just load my old clear save and go through it.
If you are on PC, Xbox, or Switch you should reinstall it if necessary and go back and do this quest. it's worth spending the time to get your copy of HL up and running again just to do it.