Avoid calling model accessor twice through default resolver

Describe the bug

When I call a model accessor from GraphQL query Lighthouse calls it twice. When I call it from outside of Lighthouse it is being called only once.

Expected behavior/Solution

When I call the accessor it should only be called once.

Steps to reproduce

1. Create a simple model and add accessor into the model, I have added dump() to understand how many time this accessor is being called.

namespace App;

use Illuminate\Database\Eloquent\Model;

class Brand extends Model
{
    public function getTestAttribute() {
        dump('TEST');
        return 'test';
    }
}

2. Define Brand type in GraphQL

type Brand {
    id: ID!
    franchise_id: Int
    country_id: Int
    name: String!
    website: String
    created_at: DateTime
    updated_at: DateTime
    test: String
}

3. Add GraphQL query to the schema

brand(id: ID @eq): Brand @guard(with: ["api"]) @find(model: "App\\Brand")

4. Call it the query by adding test attribute

query($id:ID) {
    brand (id: $id) {
        id
        test
    }
}

5. Examine the result, in the query response I see result of the dump('TEST') two times and json response itself.

"TEST"
"TEST"
{"data":{"brand":{"id":"5","test":"test"}}}

6. Change the model accessor to return null rather than a string

namespace App;

use Illuminate\Database\Eloquent\Model;

class Brand extends Model
{
    public function getTestAttribute() {
        dump('TEST');
        return null;
    }
}

7. Examine this time result of the dump('TEST') only one and json response itself

"TEST"
{"data":{"brand":{"id":"5","test":null}}}

8. This time I will try to access the accessor outside of Lighthouse, to do that first restore model accessor to return string again

namespace App;

use Illuminate\Database\Eloquent\Model;

class Brand extends Model
{
    public function getTestAttribute() {
        dump('TEST');
        return 'test';
    }
}

9. Try to access model's accessor trough Laravel's web.php, to do that add the following code at the top of the web.php

Route::get('/', function () {
    return \App\Brand::first()->test;
});

10. Try it out by going to localhost from the browser, I can see from the response that this time dump('TEST') only called once

"TEST"
test

Lighthouse Version
v4.18.0

The report provides no repository file or test entry point. Start by reproducing the issue with the Brand accessor and GraphQL query shown, then trace the default resolver's handling of the test field; done means the accessor is called once while the response remains correct.