Add protocol version check to handle potential packet issue

VelocityCore/src/de/steamwar/velocitycore/tablist/Tablist.java

@@ -148,6 +148,11 @@ public class Tablist extends ChannelInboundHandlerAdapter {
                 current.clear();
             }
 
+            if (player.getProtocolVersion().noLessThan(ProtocolVersion.MINECRAFT_1_21_5)) {
+                // TODO: Misformed Packet?
+                return;
+            }
+
             sendPacket(player, createTeamPacket);
         }
     }