Fix #3982 maxDepth property of the ApiSubresource annotation not working

src/Annotation/ApiSubresource.php

@@ -20,6 +20,9 @@
  *
  * @Annotation
  * @Target({"METHOD", "PROPERTY"})
+ * @Attributes(
+ *     @Attribute("maxDepth", type="int"),
+ * )
  */
 #[\Attribute(\Attribute::TARGET_PROPERTY | \Attribute::TARGET_METHOD)]
 final class ApiSubresource
@@ -36,6 +39,8 @@ public function __construct($maxDepth = null)
     {
         if (!\is_array($maxDepth)) { // @phpstan-ignore-line
             $this->maxDepth = $maxDepth;
+        } else {
+            $this->maxDepth = $maxDepth['maxDepth'] ?? null;
         }
     }
 }

tests/Annotation/ApiSubresourceTest.php

@@ -0,0 +1,53 @@
+<?php
+
+/*
+ * This file is part of the API Platform project.
+ *
+ * (c) Kévin Dunglas <dunglas@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace ApiPlatform\Core\Tests\Annotation;
+
+use ApiPlatform\Core\Annotation\ApiSubresource;
+use PHPUnit\Framework\TestCase;
+
+/**
+ * @author Cody Banman <crbanman@gmail.com>
+ */
+class ApiSubresourceTest extends TestCase
+{
+    public function testAssignation()
+    {
+        $property = new ApiSubresource();
+        $property->maxDepth = 1;
+
+        $this->assertEquals(1, $property->maxDepth);
+    }
+
+    public function testConstruct()
+    {
+        $property = new ApiSubresource([ // @phpstan-ignore-line
+            'maxDepth' => 1,
+        ]);
+        $this->assertEquals(1, $property->maxDepth);
+    }
+
+    /**
+     * @requires PHP 8.0
+     */
+    public function testConstructAttribute()
+    {
+        $property = eval(<<<'PHP'
+return new \ApiPlatform\Core\Annotation\ApiSubresource(
+    maxDepth: 1
+);
+PHP
+        );
+        $this->assertEquals(1, $property->maxDepth);
+    }
+}