[DI] fix preloading script generation

Author: nicolas-grekas

Core/Authentication/AuthenticationProviderManager.php

@@ -22,6 +22,11 @@
 use Symfony\Component\Security\Core\Exception\AuthenticationException;
 use Symfony\Component\Security\Core\Exception\ProviderNotFoundException;
 
+// Help opcache.preload discover always-needed symbols
+class_exists(AuthenticationEvents::class);
+class_exists(AuthenticationFailureEvent::class);
+class_exists(AuthenticationSuccessEvent::class);
+
 /**
  * AuthenticationProviderManager uses a list of AuthenticationProviderInterface
  * instances to authenticate a Token.

Core/Authorization/ExpressionLanguage.php

@@ -14,6 +14,9 @@
 use Psr\Cache\CacheItemPoolInterface;
 use Symfony\Component\ExpressionLanguage\ExpressionLanguage as BaseExpressionLanguage;
 
+// Help opcache.preload discover always-needed symbols
+class_exists(ExpressionLanguageProvider::class);
+
 if (!class_exists(BaseExpressionLanguage::class)) {
     throw new \LogicException(sprintf('The "%s" class requires the "ExpressionLanguage" component. Try running "composer require symfony/expression-language".', ExpressionLanguage::class));
 } else {

Http/Firewall/AnonymousAuthenticationListener.php

@@ -19,6 +19,9 @@
 use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface;
 use Symfony\Component\Security\Core\Exception\AuthenticationException;
 
+// Help opcache.preload discover always-needed symbols
+class_exists(AnonymousToken::class);
+
 /**
  * AnonymousAuthenticationListener automatically adds a Token if none is
  * already present.

Http/Firewall/LegacyListenerTrait.php

@@ -15,6 +15,9 @@
 use Symfony\Component\HttpKernel\Event\GetResponseEvent;
 use Symfony\Component\HttpKernel\Event\RequestEvent;
 
+// Help opcache.preload discover always-needed symbols
+class_exists(RequestEvent::class);
+
 /**
  * @deprecated
  *