MLKEM_encap_external_entropy
ret = MLKEM_encap_external_entropy(public_key, entropy, out_ciphertext,
int MLKEM_encap_external_entropy(const MLKEM_public_key *public_key,
if (!MLKEM_encap_external_entropy(pub, encap_entropy,
if (!MLKEM_encap_external_entropy(pub_key, CBS_data(&entropy),