Enable native lazy objects in doctrine/orm if available

Fixes deprecation warnings in PHP 8.4 or higher and an error in symfony 8 and higher since the LazyGhostTrait is no longer available but doctrine/orm relies on it when not using native lazy objects.

Author: W0rma

tests/Metadata/Driver/DoctrineDriverTest.php

@@ -137,8 +137,12 @@ public function testGuidPropertyIsGivenStringType()
     protected function getEntityManager(): EntityManager
     {
         $config = new Configuration();
-        $config->setProxyDir(sys_get_temp_dir() . '/JMSDoctrineTestProxies');
-        $config->setProxyNamespace('JMS\Tests\Proxies');
+        if (PHP_VERSION_ID >= 80400 && method_exists($config, 'enableNativeLazyObjects')) {
+            $config->enableNativeLazyObjects(true);
+        } else {
+            $config->setProxyDir(sys_get_temp_dir() . '/JMSDoctrineTestProxies');
+            $config->setProxyNamespace('JMS\Tests\Proxies');
+        }
 
         if (PHP_VERSION_ID >= 80000 && class_exists(DoctrineAttributeDriver::class)) {
             $config->setMetadataDriverImpl(

tests/Serializer/Doctrine/IntegrationTest.php

@@ -148,9 +148,13 @@ private function createEntityManager(Connection $con)
             ]));
         }
 
-        $cfg->setAutoGenerateProxyClasses(true);
-        $cfg->setProxyNamespace('JMS\Serializer\DoctrineProxy');
-        $cfg->setProxyDir(sys_get_temp_dir() . '/serializer-test-proxies');
+        if (PHP_VERSION_ID >= 80400 && method_exists($cfg, 'enableNativeLazyObjects')) {
+            $cfg->enableNativeLazyObjects(true);
+        } else {
+            $cfg->setAutoGenerateProxyClasses(true);
+            $cfg->setProxyNamespace('JMS\Serializer\DoctrineProxy');
+            $cfg->setProxyDir(sys_get_temp_dir() . '/serializer-test-proxies');
+        }
 
         return new EntityManager($con, $cfg);
     }

tests/Serializer/Doctrine/ObjectConstructorTest.php

@@ -543,9 +543,13 @@ private function createEntityManager(Connection $con, ?Configuration $cfg = null
             }
         }
 
-        $cfg->setAutoGenerateProxyClasses(true);
-        $cfg->setProxyNamespace('JMS\Serializer\DoctrineProxy');
-        $cfg->setProxyDir(sys_get_temp_dir() . '/serializer-test-proxies');
+        if (PHP_VERSION_ID >= 80400 && method_exists($cfg, 'enableNativeLazyObjects')) {
+            $cfg->enableNativeLazyObjects(true);
+        } else {
+            $cfg->setAutoGenerateProxyClasses(true);
+            $cfg->setProxyNamespace('JMS\Serializer\DoctrineProxy');
+            $cfg->setProxyDir(sys_get_temp_dir() . '/serializer-test-proxies');
+        }
 
         return new EntityManager($con, $cfg);
     }