bug symfony#54970 [DependencyInjection] Process PHP configs using the ContainerConfigurator (MatTheCat)

This PR was merged into the 7.1 branch.

Discussion
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[DependencyInjection] Process PHP configs using the ContainerConfigurator

| Q             | A
| ------------- | ---
| Branch?       | 7.1
| Bug fix?      | yes
| New feature?  | no
| Deprecations? | no
| Issues        | Fix symfony#54852
| License       | MIT

Since symfony#52843, `ContainerConfigurator::extension` is not called anymore which means `ParamConfigurator`s are no longer processed and converted to strings, and make nodes validation fail: e.g. `framework.secret` would receive an `EnvConfigurator` and throw because it is not a scalar.

Commits
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e6dc6be [DependencyInjection] Process PHP configs using the ContainerConfigurator

Author: nicolas-grekas

src/Symfony/Component/DependencyInjection/Loader/PhpFileLoader.php

@@ -145,16 +145,8 @@ class_exists(ContainerConfigurator::class);
 
         $callback(...$arguments);
 
-        $this->loadFromExtensions($configBuilders);
-    }
-
-    /**
-     * @param iterable<ConfigBuilderInterface> $configBuilders
-     */
-    private function loadFromExtensions(iterable $configBuilders): void
-    {
         foreach ($configBuilders as $configBuilder) {
-            $this->loadExtensionConfig($configBuilder->getExtensionAlias(), $configBuilder->toArray());
+            $containerConfigurator->extension($configBuilder->getExtensionAlias(), $configBuilder->toArray(), $this->prepend);
         }
 
         $this->loadExtensionConfigs();

src/Symfony/Component/DependencyInjection/Tests/Fixtures/config/config_builder_env_configurator.php

@@ -0,0 +1,8 @@
+<?php
+
+use Symfony\Component\DependencyInjection\Tests\Fixtures\AcmeConfig;
+use function Symfony\Component\DependencyInjection\Loader\Configurator\env;
+
+return function (AcmeConfig $config) {
+    $config->color(env('COLOR'));
+};

src/Symfony/Component/DependencyInjection/Tests/Loader/PhpFileLoaderTest.php

@@ -243,4 +243,14 @@ public function testServiceWithServiceLocatorArgument()
         $values = ['foo' => new Definition(\stdClass::class), 'bar' => new Definition(\stdClass::class)];
         $this->assertEquals([new ServiceLocatorArgument($values)], $container->getDefinition('locator_dependent_inline_service')->getArguments());
     }
+
+    public function testConfigBuilderEnvConfigurator()
+    {
+        $container = new ContainerBuilder();
+        $container->registerExtension(new \AcmeExtension());
+        $loader = new PhpFileLoader($container, new FileLocator(\dirname(__DIR__).'/Fixtures'), 'prod', new ConfigBuilderGenerator(sys_get_temp_dir()), true);
+        $loader->load('config/config_builder_env_configurator.php');
+
+        $this->assertIsString($container->getExtensionConfig('acme')[0]['color']);
+    }
 }