enforce doctype match for mdoc pex (#336)

Signed-off-by: kenkosmowski <ken.kosmowski@gmx.de>

Author: kenkosmowski

src/WalletFramework.Oid4Vc/Oid4Vp/PresentationExchange/Services/PexService.cs

@@ -182,7 +182,8 @@ private async Task<Option<IEnumerable<ICredential>>> GetMatchingCredentials(
         var filteredMdocRecords = mdocRecords.OnSome(records => records
             .Where(record =>
             {
-                return record.Mdoc.IssuerSigned.IssuerAuth.ProtectedHeaders.Value.TryGetValue(new CoseLabel(1), out var alg)
+                return record.DocType == inputDescriptor.Id
+                       && record.Mdoc.IssuerSigned.IssuerAuth.ProtectedHeaders.Value.TryGetValue(new CoseLabel(1), out var alg)
                        && supportedFormatSigningAlgorithms.Match(
                            formats => formats.MDocFormat?.Alg?.Contains(alg.ToString()) ?? true,
                            () => inputDescriptor.Formats?.MDocFormat?.Alg?.Contains(alg.ToString()) ?? true)