Merge branch '6.4' into 7.0

* 6.4:
  [AssetMapper] Handle assets with non-ascii characters in dev server
  [Translation] Fix `TranslationNodeVisitor` with constant domain
  CS fix
  [Routing] Remove `@final` annotation from `Route` attribute
  [Messenger] [AMQP] Throw exception on `nack` callback
  [Validator] revise Latvian translations
  [ErrorHandler] Fix `RecursiveDirectoryIterator` exception with wrong composer autoload
  [HttpFoundation] Request without content-type or content-length header should result in null values, not empty strings
  [Cache] Fix possible infinite loop in `CachePoolPass`
  grab a service from the container only if it exists
  [Mime] Fix undefined array key 0 when empty sender
  [Console] Allow '0' as a $shortcut in InputOption.php
  fix multi-byte code area to convert
  [Validator] Make it explicit when English translation differs from its resource name

Author: nicolas-grekas

Attribute/Route.php

@@ -14,8 +14,6 @@
 /**
  * @author Fabien Potencier <fabien@symfony.com>
  * @author Alexander M. Turek <me@derrabus.de>
- *
- * @final
  */
 #[\Attribute(\Attribute::IS_REPEATABLE | \Attribute::TARGET_CLASS | \Attribute::TARGET_METHOD)]
 class Route

Tests/Fixtures/AttributeFixtures/ExtendedRoute.php

@@ -0,0 +1,14 @@
+<?php
+
+namespace Symfony\Component\Routing\Tests\Fixtures\AttributeFixtures;
+
+use Symfony\Component\Routing\Attribute\Route;
+
+#[\Attribute(\Attribute::IS_REPEATABLE | \Attribute::TARGET_CLASS | \Attribute::TARGET_METHOD)]
+class ExtendedRoute extends Route
+{
+    public function __construct(array|string $path = null, ?string $name = null, array $defaults = [])
+    {
+        parent::__construct("/{section<(foo|bar|baz)>}" . $path, $name, [], [], array_merge(['section' => 'foo'], $defaults));
+    }
+}

Tests/Fixtures/AttributeFixtures/ExtendedRouteOnClassController.php

@@ -0,0 +1,14 @@
+<?php
+
+namespace Symfony\Component\Routing\Tests\Fixtures\AttributeFixtures;
+
+use Symfony\Component\Routing\Attribute\Route;
+
+#[ExtendedRoute('/class-level')]
+class ExtendedRouteOnClassController
+{
+    #[Route(path: '/method-level', name: 'action')]
+    public function action()
+    {
+    }
+}

Tests/Fixtures/AttributeFixtures/ExtendedRouteOnMethodController.php

@@ -0,0 +1,11 @@
+<?php
+
+namespace Symfony\Component\Routing\Tests\Fixtures\AttributeFixtures;
+
+class ExtendedRouteOnMethodController
+{
+    #[ExtendedRoute(path: '/method-level', name: 'action')]
+    public function action()
+    {
+    }
+}

Tests/Loader/AttributeClassLoaderTest.php

@@ -19,6 +19,8 @@
 use Symfony\Component\Routing\Tests\Fixtures\AttributeFixtures\DefaultValueController;
 use Symfony\Component\Routing\Tests\Fixtures\AttributeFixtures\EncodingClass;
 use Symfony\Component\Routing\Tests\Fixtures\AttributeFixtures\ExplicitLocalizedActionPathController;
+use Symfony\Component\Routing\Tests\Fixtures\AttributeFixtures\ExtendedRouteOnClassController;
+use Symfony\Component\Routing\Tests\Fixtures\AttributeFixtures\ExtendedRouteOnMethodController;
 use Symfony\Component\Routing\Tests\Fixtures\AttributeFixtures\GlobalDefaultsClass;
 use Symfony\Component\Routing\Tests\Fixtures\AttributeFixtures\InvokableController;
 use Symfony\Component\Routing\Tests\Fixtures\AttributeFixtures\InvokableLocalizedController;
@@ -332,6 +334,22 @@ public function testMethodsAndSchemes()
         $this->assertSame(['https'], $routes->get('string')->getSchemes());
     }
 
+    public function testLoadingExtendedRouteOnClass()
+    {
+        $routes = $this->loader->load(ExtendedRouteOnClassController::class);
+        $this->assertCount(1, $routes);
+        $this->assertSame('/{section}/class-level/method-level', $routes->get('action')->getPath());
+        $this->assertSame(['section' => 'foo'], $routes->get('action')->getDefaults());
+    }
+
+    public function testLoadingExtendedRouteOnMethod()
+    {
+        $routes = $this->loader->load(ExtendedRouteOnMethodController::class);
+        $this->assertCount(1, $routes);
+        $this->assertSame('/{section}/method-level', $routes->get('action')->getPath());
+        $this->assertSame(['section' => 'foo'], $routes->get('action')->getDefaults());
+    }
+
     public function testDefaultRouteName()
     {
         $routeCollection = $this->loader->load(EncodingClass::class);