Add client address to the error log when cert lookup fails in QUIC.

PiperOrigin-RevId: 396642604

quic/core/tls_server_handshaker.cc

diff --git a/quic/core/tls_server_handshaker.cc b/quic/core/tls_server_handshaker.cc
index ba7aedb..5756775 100644
--- a/quic/core/tls_server_handshaker.cc
+++ b/quic/core/tls_server_handshaker.cc
@@ -1001,7 +1001,9 @@
     } else {
       QUIC_LOG(ERROR) << "No certs provided for host '"
                       << crypto_negotiated_params_->sni << "', server_address:"
-                      << session()->connection()->self_address();
+                      << session()->connection()->self_address()
+                      << ", client_address:"
+                      << session()->connection()->peer_address();
     }
   }