test(iroh-net): Ignore MagicEndpoint test again (#1300)

I have sufficient information for now to work on improving this.  No
point in keeping a known flaky test in CI for now.

Part of #1183

iroh-net/src/magic_endpoint.rs

@@ -378,6 +378,7 @@ impl MagicEndpoint {
     pub async fn close(&self, error_code: VarInt, reason: &[u8]) -> anyhow::Result<()> {
         self.endpoint.close(error_code, reason);
         self.endpoint.wait_idle().await;
+        // TODO: Now wait-idle on msock!
         self.msock.close().await?;
         Ok(())
     }
@@ -447,6 +448,7 @@ mod tests {
 
     const TEST_ALPN: &[u8] = b"n0/iroh/test";
 
+    #[ignore]
     #[tokio::test]
     async fn magic_endpoint_connect_close() {
         let _guard = setup_logging();
@@ -484,6 +486,7 @@ mod tests {
                             quinn::ConnectionError::LocallyClosed
                         ))
                     );
+                    info!("server test completed");
                 }
                 .instrument(info_span!("test-server")),
             )
@@ -527,6 +530,7 @@ mod tests {
 
                 let res = conn.open_uni().await;
                 assert_eq!(res.unwrap_err(), expected_err);
+                info!("client test completed");
             }
             .instrument(info_span!("test-client")),
         );