Swagger UI ignores required property based on code case convention

[Kallys]

API Platform version(s) affected: 2.6.8

Description
Swagger UI ignores required property when mixing snake_case for variables and camelCase for accessors in entities.

How to reproduce

#[ApiResource(...)]
#[ORM\Entity]
class AnEntity
{
    #[ORM\OneToOne(...)]
    #[Assert\NotNull]
    private AnotherEntity $another_entity;

    /**
     * @return AnotherEntity
     */
    public function getAnotherEntity(): AnotherEntity
    {
        return $this->another_entity;
    }

    /**
     * @param AnotherEntity $another_entity
     */
    public function setAnotherEntity(AnotherEntity $another_entity): void
    {
        $this->another_entity= $another_entity;
    }
}

Possible Solution

1. Clearly expose in documentation that Symfony naming convention is required
2. Make metadata loaders aware of project naming convention
3. The third solution

Additional Context