I am sending a stream from an IFormFile, but I am getting the following error

### Expected Behaviour

Generate PDF from docx in IFormFile

### Actual Behaviour
Error:

### Reproduce Scenario (including but not limited to)

#### Steps to Reproduce

#### Platform and Version
.NET 7 in macOS 13.5 with Apple Sillicon

#### Sample Code that illustrates the problem
```
// Initial setup, create credentials instance.
Credentials credentials = Credentials.ServicePrincipalCredentialsBuilder()
.WithClientId("")
.WithClientSecret("")
.Build();

ExecutionContext executionContext = ExecutionContext.Create(credentials);
DocumentMergeOptions documentMergeOptions = new DocumentMergeOptions(jsonObject, OutputFormat.PDF);
DocumentMergeOperation documentMergeOperation = DocumentMergeOperation.CreateNew(documentMergeOptions);

using var stream = new MemoryStream();
await file.CopyToAsync(stream);
FileRef source = FileRef.CreateFromStream(stream, CreatePDFOperation.SupportedSourceFormat.DOCX.GetMediaType());
documentMergeOperation.SetInput(source);

FileRef result = documentMergeOperation.Execute(executionContext);
await using Stream outputStream = PrepareOutputStream();
result.SaveAs(outputStream);
_logger.LogInfo("Moving this temporary file to output stream.");
```

#### Logs taken while reproducing problem

Comience con la ruta del código de ejemplo proporcionado en FileRef.CreateFromStream y DocumentMergeOperation.Execute, y compárela después con el manejo del flujo IFormFile por parte de la aplicación de ejemplo de .NET 7. Capture primero el error completo y los pasos completos para reproducirlo; se considera terminado cuando se reproduce el fallo y se identifica una corrección documentada o un problema confirmado del SDK.

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