回调：OnPathValidationCallback#>>>

🌐 Callback: OnPathValidationCallback

• this quic.QuicSession
• result <string> 以下三个之一：'success'、'failure' 或 'aborted'。
• newLocalAddress <net.SocketAddress>
• newRemoteAddress <net.SocketAddress>
• oldLocalAddress <net.SocketAddress>
• oldRemoteAddress <net.SocketAddress>
• preferredAddress <boolean>