This PR adds option to use Expression for defining validation groups when using#[MapRequestPayload] and
#[MapQueryString]

Inspired by expression options when using#[IsGranted], request and args are available.

Example:
We have route which is used to update user info. EntityUser has propertytype which can beadmin orregular.
If user is admin, his password must be very strong and they must have image while regular user can have weaker password and image is not required.
Payload used in request:

finalreadonlyclass UpdateUserDTO{publicfunction__construct(        #[Assert\NotNull(message:'Admin user must have image', groups: ['admin'])]public ?string$image,        #[Assert\PasswordStrength(minScore:Assert\PasswordStrength::STRENGTH_MEDIUM, groups: ['regular'])]        #[Assert\PasswordStrength(minScore:Assert\PasswordStrength::STRENGTH_VERY_STRONG, groups: ['admin'])]publicstring$password,    ) {    }}

We need to dynamically determine which validation group to use based on context (User that is being updated).
Current way of doing this is to manually callvalidate method:

$violations =$this->validator->validate($dto, groups: [$user->getType()]);// handle violations...

This PR allows usage of Expression with access to arguments so above code can be replaced with#[MapRequestPayload]

#[Route('/user/{id}', methods: ['PUT'])]publicfunction updateUserAction(User$user,    #[MapRequestPayload(        validationGroups: [newExpression('args["user"].getType()')],    )]UpdateUserDTO$dto)