fix: cancel connection

Author: joelmbell

Sources/NWWebSocket/Model/Client/NWWebSocket.swift

@@ -526,6 +526,8 @@ open class NWWebSocket: WebSocketConnection {
         // Only schedule disconnection if we haven't already scheduled one
         if isDisconnectionNWError(error) && disconnectionWorkItem == nil {
             let reasonData = "The websocket disconnected unexpectedly".data(using: .utf8)
+            // Cancel the zombie connection to ensure reconnect creates a fresh NWConnection
+            connection?.cancel()
             scheduleDisconnectionReporting(closeCode: .protocolCode(.goingAway),
                                            reason: reasonData)
         }