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/FrameworkExtension.php

@@ -826,7 +826,7 @@ static function (ChildDefinition $definition, AsPeriodicTask|AsCronTask $attribu
             $container->getDefinition('config_cache_factory')->setArguments([]);
         }
 
-        if (!$config['disallow_search_engine_index'] ?? false) {
+        if (!$config['disallow_search_engine_index']) {
             $container->removeDefinition('disallow_search_engine_index_response_listener');
         }