Symfony version(s) affected

6.1

Description

Argument $expectedValue has a not-nullable type string. But the value property in class Symfony\Component\HttpFoundation\Cookie can be null.

How to reproduce

In any test that extends WebTestCase use the assertion:
self::assertResponseCookieValueSame('SOME_COOKIE_NAME', null);

Possible Solution

1. In method Symfony\Bundle\FrameworkBundle\Test\BrowserKitAssertionsTrait::assertResponseCookieValueSame change type of argument $expectedValue to ?string
2. In class Symfony\Component\HttpFoundation\Test\Constraint\ResponseCookieValueSame change type of private property $value to ?string
3. In method Symfony\Component\HttpFoundation\Test\Constraint\ResponseCookieValueSame::_construct change type of argument $value to ?string

Additional Context

No response