Symfony version(s) affected: 5.2.0-beta2

Description

In the request stack does now only contain strings instead of integer like before:

How to reproduce

I did test sulu against the newest 5.2.0-dev and some tests are failing now a basic example looks like this:

$this->client->request(
    'PUT',
    '/api/contacts/' . $contact->getId(),
    [
        'account' => [
            'id' => 5, // a integer type
        ],
    ]
);

If we then debug the value is now a string, in 5.1.7 its correctly a integer:

$request->request->all()['account']['id'];

Before this was a integer with 5 and now its an string with "5" and so this make in our case some test fail which I think should not happen.

Possible Solution

Not sure yet where and why this behaviour was changed.