BUG: preload form data not working for fields with no prop

[manojadams]

Repro

Schema with which it is not working:

{
    "fields": [
        {
            "name": "first_name",
            "meta": {
                "displayName": "First name",
                "displayType": "text_field",
                "value": "Goku"
            }
        },
        {
            "name": "last_name",
            "meta": {
                "displayName": "Last name",
                "displayType": "text_field",
                "value": "San"
            }
        }
    ]
}