da4024b46a
Fix handling of ServerHello in TLS v1.3 to support TLS v1.2 when downgrading. Added support in client and server examples for using downgrade method: wolfSSLv23_client_method_ex() or wolfSSLv23_server_method_ex(). Add tests, using downgrade version, of client or server downgrading from TLS v1.3 to TLS v1.2.