refactor(Core/Misc): port gossip validation, StringFormat APIs, and spell attribute naming from TC (#24789)

Co-authored-by: Rochet2 <tqbattlenet@gmail.com>
Co-authored-by: Shauren <shauren.trinity@gmail.com>
Co-authored-by: tobmaps <spambot42@yandex.ru>

src/server/game/Handlers/MiscHandler.cpp

@@ -96,6 +96,12 @@ void WorldSession::HandleGossipSelectOptionOpcode(WorldPacket& recv_data)
 
     recv_data >> guid >> menuId >> gossipListId;
 
+    if (!_player->PlayerTalkClass->GetGossipMenu().GetItem(gossipListId))
+    {
+        recv_data.rfinish();
+        return;
+    }
+
     if (_player->PlayerTalkClass->IsGossipOptionCoded(gossipListId))
         recv_data >> code;