[Bots] Cleanup AI_IdleCastCheck Logic (#3004)

* [Bots] Cleanup AI_IdleCastCheck Logic

* cleanup logic

zone/bot.cpp

@@ -2470,6 +2470,7 @@ void Bot::AI_Process()
 	}
 
 	// We also need a leash owner and follow mob (subset of primary AI criteria)
+	bot_group->VerifyGroup();
 	Client* leash_owner = (bot_group->GetLeader() && bot_group->GetLeader()->IsClient() ? bot_group->GetLeader()->CastToClient() : bot_owner);
 	if (!leash_owner) {
 		return;