Merge branch '5.4' into 6.0

* 5.4:
  [Security] Do not overwrite already stored tokens for REMOTE_USER authentication
  [Validator] Fix validation for single level domains
  [Notifier] add Vonage bridge to replace the Nexmo one
  Fix redundant type casts
  Increased the reserved memory from 10k to 32k
  Complete event name & dispatcher in EventDispatcherDebugCommand
  [DoctrineBridge] Add DbalLoggerTest to group legacy
  Leverage DBAL's getNativeConnection() method
  [FrameworkBundle] Fix property-info phpstan extractor discovery
  Fix idempotency of LocoProvider write method

Question/Question.php

@@ -121,7 +121,7 @@ public function isHiddenFallback(): bool
      */
     public function setHiddenFallback(bool $fallback): static
     {
-        $this->hiddenFallback = (bool) $fallback;
+        $this->hiddenFallback = $fallback;
 
         return $this;
     }