feature #46752 [DependencyInjection] Use lazy-loading ghost object proxies out of the box (nicolas-grekas)

This PR was merged into the 6.2 branch.

Discussion
----------

[DependencyInjection] Use lazy-loading ghost object proxies out of the box

| Q             | A
| ------------- | ---
| Branch?       | 6.2
| Bug fix?      | no
| New feature?  | yes
| Deprecations? | no
| Tickets       | Fix #35345
| License       | MIT
| Doc PR        | -

This PR builds on #46751. It also replaces #46458.

Instead of using ProxyManager to make lazy services actually lazy, using `LazyGhostObjectTrait` from #46751 allows doing so *out of the box* - aka without the need to install any optional dependencies.

When a virtual proxy is required (typically when using [the `proxy` tag](symfony/symfony#27697)), ProxyManager is still required (and the dep remains optional.)

But for most services, using `LazyGhostObjectTrait` just works \o/

Commits
-------

58a184826a [DependencyInjection] Use lazy-loading ghost object proxies out of the box

Author: nicolas-grekas

Kernel.php

@@ -11,8 +11,6 @@
 
 namespace Symfony\Component\HttpKernel;
 
-use Symfony\Bridge\ProxyManager\LazyProxy\Instantiator\RuntimeInstantiator;
-use Symfony\Bridge\ProxyManager\LazyProxy\PhpDumper\ProxyDumper;
 use Symfony\Component\Config\Builder\ConfigBuilderGenerator;
 use Symfony\Component\Config\ConfigCache;
 use Symfony\Component\Config\Loader\DelegatingLoader;
@@ -683,9 +681,6 @@ protected function getContainerBuilder(): ContainerBuilder
         if ($this instanceof CompilerPassInterface) {
             $container->addCompilerPass($this, PassConfig::TYPE_BEFORE_OPTIMIZATION, -10000);
         }
-        if (class_exists(\ProxyManager\Configuration::class) && class_exists(RuntimeInstantiator::class)) {
-            $container->setProxyInstantiator(new RuntimeInstantiator());
-        }
 
         return $container;
     }
@@ -701,10 +696,6 @@ protected function dumpContainer(ConfigCache $cache, ContainerBuilder $container
         // cache the container
         $dumper = new PhpDumper($container);
 
-        if (class_exists(\ProxyManager\Configuration::class) && class_exists(ProxyDumper::class)) {
-            $dumper->setProxyDumper(new ProxyDumper());
-        }
-
         $content = $dumper->dump([
             'class' => $class,
             'base_class' => $baseClass,

composer.json

@@ -28,7 +28,7 @@
         "symfony/config": "^6.1",
         "symfony/console": "^5.4|^6.0",
         "symfony/css-selector": "^5.4|^6.0",
-        "symfony/dependency-injection": "^6.1",
+        "symfony/dependency-injection": "^6.2",
         "symfony/dom-crawler": "^5.4|^6.0",
         "symfony/expression-language": "^5.4|^6.0",
         "symfony/finder": "^5.4|^6.0",
@@ -51,7 +51,7 @@
         "symfony/config": "<6.1",
         "symfony/console": "<5.4",
         "symfony/form": "<5.4",
-        "symfony/dependency-injection": "<6.1",
+        "symfony/dependency-injection": "<6.2",
         "symfony/doctrine-bridge": "<5.4",
         "symfony/http-client": "<5.4",
         "symfony/mailer": "<5.4",