ValueRelation editing widget option `UseCompleter` fail.

[wlorenzetti]

Checklist

• [X] I've searched through the existing issues and this bug has never been reported before

Subject of the issue

If a field of a layer has a ValueRelation widget active, is it possible set for it the User completer on QGIS desktop interface:

the relative /vector/api/config repsonse for the layer return the usecompleter property:

 "input": {
       "type": "select_autocomplete",
        "options": {
          "values": [],
           "default": null,
            "key": "name",
            "value": "code",
            "usecompleter": false,
            "layer_id": "roads_ea006d6f_bd87_4635_aae0_4e9e7842b3f4",
            "loading": {
              "state": null
            },
            "filter_expression": null
 }

checking the UseCompleter :

the API response contain again usecompleter set to true

 "input": {
       "type": "select_autocomplete",
        "options": {
          "values": [],
           "default": null,
            "key": "name",
            "value": "code",
            "usecompleter": false,
            "layer_id": "roads_ea006d6f_bd87_4635_aae0_4e9e7842b3f4",
            "loading": {
              "state": null
            },
            "filter_expression": null
 }

Steps to reproduce

1. go to public-building-management-demo/layers
2. download the project
3. modify the ValueRelation UserCompleter parameter
4. save again the project in G3W-SUITE
5. check /vector/api/config/qdjango/336/buildings_2f43dc1d_6725_42d2_a09b_dd446220104a/

Environment

• g3w-admin: 3.7.dev-20240319064048
• g3w-client: 3.10.0-alpha.1
• editing: 3.8.0-alpha.1
• qtimeseries: undefined
• browser: Firefox 125.0
• operating system: Linux 64-bit

Link to your project

No response

Additional info

No response