Some signature algorithms (e.g., ML-DSA-65) cannot be initialized
via EVP_PKEY_sign_init, so try also EVP_PKEY_sign_message_init
before reporting an error.
Fixes#27108.
Signed-off-by: Pavol Žáčik <zacik.pa@gmail.com>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com>
(Merged from https://github.com/openssl/openssl/pull/28224)