Merge branch '5.3' into 5.4

* 5.3:
  [Security] Do not overwrite already stored tokens for REMOTE_USER authentication
  [Validator] Fix validation for single level domains
  Fix redundant type casts
  Increased the reserved memory from 10k to 32k
  [DoctrineBridge] Add DbalLoggerTest to group legacy
  Leverage DBAL's getNativeConnection() method
  Fix idempotency of LocoProvider write method

Author: nicolas-grekas

Definition.php

@@ -146,7 +146,7 @@ public function setDecoratedService(?string $id, string $renamedId = null, int $
         if (null === $id) {
             $this->decoratedService = null;
         } else {
-            $this->decoratedService = [$id, $renamedId, (int) $priority];
+            $this->decoratedService = [$id, $renamedId, $priority];
 
             if (ContainerInterface::EXCEPTION_ON_INVALID_REFERENCE !== $invalidBehavior) {
                 $this->decoratedService[] = $invalidBehavior;

ParameterBag/ParameterBag.php

@@ -109,7 +109,7 @@ public function set(string $name, $value)
      */
     public function has(string $name)
     {
-        return \array_key_exists((string) $name, $this->parameters);
+        return \array_key_exists($name, $this->parameters);
     }
 
     /**