Incorrect behaviour of the cast_data_to_json in integration execution

[Daandeve]

I found something very strange, when executing a request with "cast_data_to_json": true the data gets send as a formdata body, also when you do not provide cast_data_to_json and when you provide "cast_data_to_json": false the data gets send as a json body.

This is the configuration, the only thing I change is the `cast_data_to_json``field

        {
            "url": "xxx",
            "data": {
                "name": "{{first_name}} {{last_name}}",
                "email": "{{email}}",
                "username": "{{first_name}} {{last_name}}"
            },
            "method": "POST"
        }

Received request body with "cast_data_to_json": true:

name=Test+Test&email=testing%40example.com&groups=&username=Test+Test

Received request body with "cast_data_to_json": false:`

{"name": "Test Test", "email": "[email protected]", "username": "Test Test"}

Received request body without cast_data_to_json:

name=Test+Test&email=testing%40example.com&groups=&username=Test+Test