fix broken implementations of GOST ciphersuites

removed the unnecessary upper bracket
add !SSL_USE_SIGALGS to check for broken implementations of GOST
client signature (signature without length field)

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3588)