Choose a safer value for SSL_OP_ALLOW_NO_DHE_KEX

1.1.0 included the previous value for SSL_OP_ALLOW_NO_DHE_KEX in
SSL_OP_ALL. This might cause binary compatibility issues. We should choose
a value that is not in SSL_OP_ALL.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3833)