In s_client, when using quic, if we have data from the user to write then we shouldn't
hang in "select" waiting for something to happen.
Reviewed-by: NTomas Mraz <tomas@openssl.org>
Reviewed-by: NHugo Landau <hlandau@openssl.org>
Reviewed-by: NPaul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/22480)