feature #59177 [JsonEncoder] Add native lazyghost support (mtarld)

This PR was merged into the 7.3 branch.

Discussion
----------

[JsonEncoder] Add native lazyghost support

| Q             | A
| ------------- | ---
| Branch?       | 7.3
| Bug fix?      | no
| New feature?  | yes
| Deprecations? | no
| Issues        |
| License       | MIT

- Add support for native lazy ghost if available.
- Improve var exporter lazy ghost usage, as it's not possible anymore to initialize a single property and letting the rest uninitialized.

The object part of a stream generated decoder changed from:
```php
$data = \Symfony\Component\JsonEncoder\Decode\Splitter::splitDict($stream, $offset, $length);
$properties = [];
foreach ($data as $k => $v) {
    match ($k) {
        'id' => $properties['id'] = static function () use ($stream, $v, $options, $denormalizers, $instantiator, &$providers) {
            return \Symfony\Component\JsonEncoder\Decode\NativeDecoder::decodeStream($stream, $v[0], $v[1]);
        },
        'name' => $properties['name'] = static function () use ($stream, $v, $options, $denormalizers, $instantiator, &$providers) {
            return \Symfony\Component\JsonEncoder\Decode\NativeDecoder::decodeStream($stream, $v[0], $v[1]);
        },
        default => null,
    };
}
return $instantiator->instantiate(\Symfony\Component\JsonEncoder\Tests\Fixtures\Model\ClassicDummy::class, $properties);
```

to:
```php
$data = \Symfony\Component\JsonEncoder\Decode\Splitter::splitDict($stream, $offset, $length);
return $instantiator->instantiate(\Symfony\Component\JsonEncoder\Tests\Fixtures\Model\ClassicDummy::class, static function ($object) use ($stream, $data, $options, $denormalizers, $instantiator, &$providers) {
    foreach ($data as $k => $v) {
        match ($k) {
            'id' => $object->id = \Symfony\Component\JsonEncoder\Decode\NativeDecoder::decodeStream($stream, $v[0], $v[1]),
            'name' => $object->name = \Symfony\Component\JsonEncoder\Decode\NativeDecoder::decodeStream($stream, $v[0], $v[1]),
            default => null,
        };
    }
});
```

Commits
-------

ffccbc3e342 [JsonEncoder] Add native lazyghost support

Author: fabpot

DependencyInjection/FrameworkExtension.php

@@ -2032,6 +2032,10 @@ private function registerJsonEncoderConfiguration(array $config, ContainerBuilde
         foreach ($config['paths'] as $namespace => $path) {
             $loader->registerClasses($encodableDefinition, $namespace, $path);
         }
+
+        if (\PHP_VERSION_ID >= 80400) {
+            $container->removeDefinition('.json_encoder.cache_warmer.lazy_ghost');
+        }
     }
 
     private function registerPropertyInfoConfiguration(ContainerBuilder $container, PhpFileLoader $loader): void