Refactor OpenSSL 'ECDSA' EVP_SIGNATURE to also include ECDSA+hash composites

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Viktor Dukhovni <viktor@openssl.org>
Reviewed-b

Refactor OpenSSL 'ECDSA' EVP_SIGNATURE to also include ECDSA+hash composites

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Viktor Dukhovni <viktor@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/24992)

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