Restore Bibata cursor now that it's published to [breadway]

bibata-cursor-theme-bin 2.0.7-1 is now in the [breadway] repo, so add it
back to the package list and re-enable the Bibata-Modern-Ice cursor in the
Hyprland env, GTK settings, and gsettings autostart.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

iso/airootfs/etc/skel/.config/gtk-4.0/settings.ini

@@ -2,5 +2,6 @@
 gtk-application-prefer-dark-theme=1
 gtk-theme-name=Adwaita-dark
 gtk-icon-theme-name=Papirus-Dark
+gtk-cursor-theme-name=Bibata-Modern-Ice
 gtk-cursor-theme-size=24
 gtk-font-name=Noto Sans 11