fixup! crypto: add signDigest/verifyDigest and Ed25519ctx support

Author: panva

doc/api/crypto.md

@@ -5790,7 +5790,8 @@ dependent upon the key type.
 
 `algorithm` is required to be `null` or `undefined` for Ed25519, Ed448, and
 ML-DSA. For Ed25519 and Ed448, this function uses the pure signature schemes
-from [RFC 8032][] (or Ed25519ctx when a `context` is provided). Ed25519 and
+from [RFC 8032][] (or Ed25519ctx when a non-empty `context` is provided;
+an empty or absent context uses pure Ed25519). Ed25519 and
 Ed448 signatures produced by this function cannot be verified with
 [`crypto.verifyDigest()`][] because it uses the Ed25519ph and Ed448ph prehash
 variants which have different domain separation.
@@ -5998,7 +5999,8 @@ key type.
 
 `algorithm` is required to be `null` or `undefined` for Ed25519, Ed448, and
 ML-DSA. For Ed25519 and Ed448, this function uses the pure signature schemes
-from [RFC 8032][] (or Ed25519ctx when a `context` is provided). Ed25519 and
+from [RFC 8032][] (or Ed25519ctx when a non-empty `context` is provided;
+an empty or absent context uses pure Ed25519). Ed25519 and
 Ed448 signatures produced by [`crypto.signDigest()`][] cannot be verified with
 this function because they use the Ed25519ph and Ed448ph prehash variants which
 have different domain separation.