IRemoteStreamContent causes other DTO fields to be sent as query parameters instead of request body

Is there an existing issue for this?

• I have searched the existing issues

Is your feature request related to a problem? Please describe the problem.

When I use IRemoteStreamContent in my DTO, all other fields are automatically sent as query parameters instead of being part of the request body.
I want to include them in the request body instead, but it seems ABP’s auto-generated proxy (or serialization behavior) forces them into the query string.

``
public class UploadFileDto
{
public string FileName { get; set; }
public string Description { get; set; }

public IRemoteStreamContent File { get; set; }

}
``

Describe the solution you'd like

All DTO fields (including metadata) should be in the form body — not split between query and body.

Additional context

ABP Framework version: 9.3.5

Start by reproducing the UploadFileDto example with ABP Framework 9.3.5 and inspect the auto-generated proxy and request serialization behavior. Trace how IRemoteStreamContent changes parameter placement; done when FileName, Description, and File are all sent in the form body rather than splitting metadata into query parameters.