fix: always canonicalize the SocketAddr

iroh-relay/src/quic.rs

@@ -259,10 +259,7 @@ impl QuicClient {
         let mut observed_addr = res.expect("checked");
         // if we've sent to an ipv4 address, but received an observed address
         // that is ivp6 then the address is an [IPv4-Mapped IPv6 Addresses](https://doc.rust-lang.org/beta/std/net/struct.Ipv6Addr.html#ipv4-mapped-ipv6-addresses)
-        if server_addr.is_ipv4() && observed_addr.is_ipv6() {
-            observed_addr =
-                SocketAddr::new(observed_addr.ip().to_canonical(), observed_addr.port());
-        }
+        observed_addr = SocketAddr::new(observed_addr.ip().to_canonical(), observed_addr.port());
         let latency = conn.rtt() / 2;
         // gracefully close the connections
         conn.close(QUIC_ADDR_DISC_CLOSE_CODE, QUIC_ADDR_DISC_CLOSE_REASON);