Swagger schema wrong for Request body

API Platform version(s) affected: v2.6.4

Description
When viewing API docs for POST method schema is set to the one defined with normalizationContext instead of denormalizationContext.

How to reproduce

Simple entity with basic groups setup.

<?php

namespace App\Entity;

use ApiPlatform\Core\Annotation\ApiResource;
use App\Repository\SshKeyRepository;
use Symfony\Component\Serializer\Annotation\Groups;
use Doctrine\ORM\Mapping as ORM;

/**
 * @ApiResource(
 *     normalizationContext={"groups"={"read"}},
 *     denormalizationContext={"groups"={"write"}},
 * )
 * @ORM\Entity(repositoryClass=MyEntityRepository::class)
 */
class MyEntity
{
    /**
     * @ORM\Id
     * @ORM\GeneratedValue
     * @ORM\Column(type="integer")
     */
    private $id;

    /**
     * @ORM\Column(type="string", length=255)
     * @Groups({"write"})
     */
    private $name;

    /**
     * @ORM\Column(type="string", length=255, nullable=true)
     * @Groups({"read", "write"})
     */
    private $value;

    /**
     * @ORM\Column(type="datetime")
     * @Groups({"read"})
     */
    private $createdAt;

    public function getId(): ?int
    {
        return $this->id;
    }

    public function getName(): ?string
    {
        return $this->name;
    }

    public function setName(string $name): self
    {
        $this->name = $name;

        return $this;
    }

    public function getValue(): ?string
    {
        return $this->value;
    }

    public function setValue(?string $value): self
    {
        $this->value = $value;

        return $this;
    }

    public function getCreatedAt(): ?\DateTimeInterface
    {
        return $this->createdAt;
    }

    public function setCreatedAt(\DateTimeInterface $createdAt): self
    {
        $this->createdAt = $createdAt;

        return $this;
    }
}

Swagger shows MyEntity.jsonld-read as schema for POST, PUT and PATCH request.

The same code was working fine on version 2.5.10

Additional Context

api-platform / core

Swagger schema wrong for Request body #4296