Add floating window rules for non-main Steam windows

Friends list and settings tiling can be annoying

config/hypr/UserConfigs/WindowRules.conf

@@ -40,6 +40,7 @@ windowrulev2 = float, class:^(evince)$ # document viewer
 windowrulev2 = float, class:^(file-roller|org.gnome.FileRoller)$ # archive manager
 windowrulev2 = float, class:^([Bb]aobab|org.gnome.[Bb]aobab)$ # Disk usage analyzer
 windowrulev2 = float, title:(Kvantum Manager)
+windowrulev2 = float, class:^([Ss]team)$,title:^((?![Ss]team).*|[Ss]team [Ss]ettings)$
 
 # windowrule v2 - opacity #enable as desired
 windowrulev2 = opacity 0.9 0.6, class:^([Rr]ofi)$