De-hardcodes the species preference pages, deleting the species pages and generating them in constant data on the DM side instead (#65140)

code/modules/language/language_holder.dm

@@ -61,7 +61,10 @@ Key procs
 		var/datum/mind/M = owner
 		if(M.current)
 			update_atom_languages(M.current)
-	get_selected_language()
+
+	// If we have an owner, we'll set a default selected language
+	if(owner)
+		get_selected_language()
 
 /datum/language_holder/Destroy()
 	QDEL_NULL(language_menu)