feat(quic): replace probe UDP data plane with QUIC datagrams

backend/src/MoShiro.Backend.Application/Agents/AgentService.cs

@@ -173,7 +173,8 @@ public sealed partial class AgentService
                 Host = agent.PublicHost,
                 Ipv6Host = agent.Ipv6Supported && agent.Ipv6Host.Length > 0 ? agent.Ipv6Host : null,
                 TcpPort = agent.ProbeTcpPort,
-                UdpPorts = [.. agent.ProbeUdpPorts],
+                QuicPorts = [.. agent.ProbeUdpPorts],
+                LegacyUdpPorts = [.. agent.ProbeUdpPorts],
                 PublicKey = Convert.ToBase64String(agent.TlsPublicKey!),
             });
         }