Issue when result are presented as links

[gfenoy]

Expected behavior and actual behavior
When I run an execute request suing the OGC API - Processes and ask one or more outputs as reference, the reference should be conform to the links schema. But, the current answer does look like the following:

{
    "RESULT": {
        "href": "http://cs2022.geolabs.fr:8112/cgi-bin/mapserv/RESULT_0_94f149e4-a0c1-11ec-9063-0242ac100908/ogcapi/collections/RESULT",
        "type": "application/json",
        "format": {
            "mediaType": "text/xml"
        }
    }
}

To Reproduce
You can see this happening using this very simple service on the demo instance setup during the 2022 OGC-OSGeo-ASF Code Sprint.

Set the RESULT format to application/json and the transmission to reference, then press the blue "run" button. A window should appear showing you the built execute request, then press on the blue button of this window. Wait the service to run and return.

Operating System
Docker Ubuntu 18.04

ZOO-Project version
This issue was already present in 1.8.0 version.