Forbid to specify -nextprotoneg if -tls1_3 is enabled

This applies both to s_client and s_server app.

Reaction to Issue #3665.

Signed-off-by: Paul Yang <paulyang.inf@gmail.com>

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3697)