Accept absolute URLs for ApiResource URI template.

**Description**

If the API use a remote API for a relation (with a local database cache), it would be a nice features for IRIs to point to the resource on the remote API:

**Example**

```php
use ApiPlatform\Metadata\ApiResource;
use ApiPlatform\Metadata\Get;

#[ApiResource(
uriTemplate: 'https://remote.api/custom/api/brands/{id}',
provider: null,
)]
#[Get]
final readonly class Brand
{
```

With API Platform 4.1.11, this generates `/api/https://remote.api/custom/api/brands/d1d08e37-1234-4567-918c-354b6b210ae1`.

It would be nice to allow it to generate `https://remote.api/custom/api/brands/d1d08e37-1234-4567-918c-354b6b210ae1`