Fix the constant time 64 test

We were adding more tests than we had data for due to use of
sizeof instead of OSSL_NELEM. I also changed the 8 bit tests
for consistency, although they were already working.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3755)
1 file changed