Fix VWR-24099: warn user when trying to send too many teleport offers at one time.

indra/newview/llviewermessage.cpp

@@ -6266,6 +6266,15 @@ void send_group_notice(const LLUUID& group_id,
 
 bool handle_lure_callback(const LLSD& notification, const LLSD& response)
 {
+	if(notification["payload"]["ids"].size() > 250) 
+	{
+		// More than 250 targets will overload the message.
+		LLSD args;
+		args["OFFERS"] = notification["payload"]["ids"].size();
+		LLNotificationsUtil::add("TooManyTeleportOffers", args);
+		return false;
+	}
+	
 	std::string text = response["message"].asString();
 	LLSLURL slurl;
 	LLAgentUI::buildSLURL(slurl);

indra/newview/skins/default/xui/en/notifications.xml

@@ -3696,6 +3696,19 @@ Join me in [REGION]
     </form>
   </notification>
 
+  <notification
+   icon="alertmodal.tga"
+   name="TooManyTeleportOffers"
+   type="alertmodal">
+You attempted to make [OFFERS] teleport offers; 
+250 are the most that can be done at one time
+    <tag>group</tag>
+    <tag>fail</tag>
+  <usetemplate
+     name="okbutton"
+     yestext="OK"/>
+  </notification>
+
   <notification
    icon="alertmodal.tga"
    name="OfferTeleportFromGod"