…group (renanbr)

This PR was merged into the 6.3 branch.

Discussion
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[HttpKernel] Enhance MapQueryString adding validation group

| Q             | A
| ------------- | ---
| Branch?       | 6.3
| Bug fix?      | no
| New feature?  | yes
| Deprecations? | no
| Tickets       | continuity of #50029 and #49138
| License       | MIT
| Doc PR        | n/a

- Introduces `$validationGroups` property to the `MapQueryString` attribute to work as same as in `MapRequestPayload`
- Renames `MapQueryString` property `$context` to `$serializationContext` to harmonize with `MapRequestPayload`

```php
# src/Controller/HelloController.php

namespace App\Controller;

use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpKernel\Attribute\AsController;
use Symfony\Component\HttpKernel\Attribute\MapQueryString;
use Symfony\Component\Routing\Annotation\Route;

#[AsController]
final class HelloController
{
    #[Route('/hello', methods: ['GET'])]
    public function __invoke(
        #[MapQueryString(validationGroups: 'strict')] MyObject $object,
    ): Response {
        // ...
    }
}
```

Commits
-------

8aad8b9 [HttpKernel] Enhance MapQueryString adding validation group