Add an event to config reloading that can be used to trigger a config sync (#90329)

code/modules/admin/admin_ranks.dm

@@ -211,7 +211,11 @@ GLOBAL_PROTECT(protected_ranks)
 
 /// (Re)Loads the admin list.
 /// returns TRUE if database admins had to be loaded from the backup json
-/proc/load_admins(no_update)
+/proc/load_admins(no_update, initial = FALSE)
+	if(!initial)
+		if(!global.config.PreConfigReload())
+			return
+
 	var/dbfail
 	if(!CONFIG_GET(flag/admin_legacy_system) && !SSdbcore.Connect())
 		message_admins("Failed to connect to database while loading admins. Loading from backup.")