GFE custom prober: Allow HTTP/3 probe to set `SSL_OP_NO_TICKET` despite it being a no-op in TLS1.3.

Also update `AllAgentIpHttpVersionsHttpProbeTest` to verify that resumption did not happen when `!test_resumption`.

PiperOrigin-RevId: 629058799

quiche/quic/core/crypto/quic_crypto_client_config.h

diff --git a/quiche/quic/core/crypto/quic_crypto_client_config.h b/quiche/quic/core/crypto/quic_crypto_client_config.h
index ae3b5d6..b58a546 100644
--- a/quiche/quic/core/crypto/quic_crypto_client_config.h
+++ b/quiche/quic/core/crypto/quic_crypto_client_config.h
@@ -411,6 +411,7 @@
 #endif  // BORINGSSL_API_VERSION
 
   const QuicSSLConfig& ssl_config() const { return ssl_config_; }
+  QuicSSLConfig& ssl_config() { return ssl_config_; }
 
  private:
   // Sets the members to reasonable, default values.