Merge branch '7.2' into 7.3

* 7.2:
  Use Composer InstalledVersions to check if flex is installed instead of existence of InstallRecipesCommand
  Improve readability of disallow_search_engine_index condition
  [DoctrineBridge] Fix UniqueEntityValidator Stringable identifiers
  [DoctrineBridge] Fix UniqueEntity for non-integer identifiers
  [Security] Avoid failing when PersistentRememberMeHandler handles a malformed cookie
  [PropertyAccess] Improve PropertyAccessor::setValue param docs
  fix asking for the retry option although --force was used
  [DoctrineBridge] Undefined variable

Author: fabpot

DependencyInjection/SecurityExtension.php

@@ -11,6 +11,7 @@
 
 namespace Symfony\Bundle\SecurityBundle\DependencyInjection;
 
+use Composer\InstalledVersions;
 use Symfony\Bridge\Twig\Extension\LogoutUrlExtension;
 use Symfony\Bundle\SecurityBundle\DependencyInjection\Security\Factory\AuthenticatorFactoryInterface;
 use Symfony\Bundle\SecurityBundle\DependencyInjection\Security\Factory\FirewallListenerFactoryInterface;
@@ -62,7 +63,6 @@
 use Symfony\Component\Security\Http\Authenticator\Debug\TraceableAuthenticator;
 use Symfony\Component\Security\Http\Authenticator\Debug\TraceableAuthenticatorManagerListener;
 use Symfony\Component\Security\Http\Event\CheckPassportEvent;
-use Symfony\Flex\Command\InstallRecipesCommand;
 
 /**
  * SecurityExtension.
@@ -93,7 +93,7 @@ public function prepend(ContainerBuilder $container): void
     public function load(array $configs, ContainerBuilder $container): void
     {
         if (!array_filter($configs)) {
-            $hint = class_exists(InstallRecipesCommand::class) ? 'Try running "composer symfony:recipes:install symfony/security-bundle".' : 'Please define your settings for the "security" config section.';
+            $hint = class_exists(InstalledVersions::class) && InstalledVersions::isInstalled('symfony/flex') ? 'Try running "composer symfony:recipes:install symfony/security-bundle".' : 'Please define your settings for the "security" config section.';
 
             throw new InvalidConfigurationException('The SecurityBundle is enabled but is not configured. '.$hint);
         }