Merge branch '5.4' into 6.0

* 5.4:
  [DoctrineBridge] Remove dead code
  [Lock] Remove unused variable
  [DoctrineBridge] Replace string with FQCN resolution in EntityType
  Add missing `@return $this` annotations
  [Notifier] Add missing types to SmscTransport

Author: nicolas-grekas

Store/CombinedStore.php

@@ -34,8 +34,6 @@ class CombinedStore implements SharedLockStoreInterface, LoggerAwareInterface
     /** @var PersistingStoreInterface[] */
     private array $stores;
     private StrategyInterface $strategy;
-    /** @var SharedLockStoreInterface[] */
-    private array $sharedLockStores;
 
     /**
      * @param PersistingStoreInterface[] $stores The list of synchronized stores