Tests failing after update to API Platform 4.1

[jonag]

API Platform version(s) affected: 4.1.0

Description
Hello,

When trying to migrate my project to API Platform 4.1, I'm encountering issues with my test suite.

In my tests, I automatically load my fixtures using the RefreshDatabaseTrait and I have an AbstractApiTestCase class that all my functional tests inherit from:

<?php

namespace App\Tests\Functional;

use ApiPlatform\Symfony\Bundle\Test\ApiTestCase;
use ApiPlatform\Symfony\Bundle\Test\Client;

class AbstractApiTestCase extends ApiTestCase
{
    public function setUp(): void
    {
        self::bootKernel();
    }

    protected static function createClient(array $kernelOptions = [], array $defaultOptions = []): Client
    {
        return parent::createClient(
            $kernelOptions,
            [
                'headers' => [
                    'accept' => 'application/ld+json',
                    'content-type' => 'application/ld+json',
                ],
            ] + $defaultOptions,
        );
    }
}

Since the migration, all my tests are failing because my fixtures are no longer loaded automatically.

I noticed that if I modify the setUp method in my AbstractApiTestCase class to:

public function setUp(): void
{
    static::bootKernel();
}

then the fixtures seem to load, but some of my tests are still failing. The failing tests appear to be those that make two requests in the same test, like this one:

public function testInvalidPayload(): void
{
    $client = self::createClient();
    $user = static::getContainer()->get('doctrine')->getRepository(User::class)->findOneBy(['email' => '[email protected]']);
    $client->loginUser($user);

    $client->request('POST', '/users', [
        'json' => [
            'email' => 'new_user',
            'firstName' => '',
            'lastName' => '',
            'role' => Role::USER->value,
        ],
    ]);

    self::assertResponseStatusCodeSame(422);
    self::assertJsonContains([
        'violations' => [
            ['propertyPath' => 'email', 'message' => 'This value is not a valid email address.'],
            ['propertyPath' => 'firstName', 'message' => 'This value should not be blank.'],
            ['propertyPath' => 'lastName', 'message' => 'This value should not be blank.'],
        ],
    ]);

    $client = self::createClient();
    $client->loginUser($user);
    $client->request('POST', '/users', [
        'json' => [
            'firstName' => 'John',
            'lastName' => 'Doe',
            'role' => Role::USER->value,
            'email' => '',
        ],
    ]);

    self::assertResponseStatusCodeSame(422);
    self::assertJsonContains([
        'violations' => [
            ['propertyPath' => 'email', 'message' => 'This value should not be blank.'],
        ],
    ]);
}

The second request fails with the following error:

{"code":401,"message":"JWT Token not found"}

I believe these changes are caused by this PR because if I revert all its changes, my tests pass correctly again.

Unfortunately, I cannot find what I can modify in my tests to fix this second issue (and I'm not sure if my first fix is the correct one).

Please tell me if there is anything I can do to help find the issue.