Merge branch '4.2'

* 4.2: (26 commits)
  Apply php-cs-fixer rule for array_key_exists()
  [Cache] fix warming up cache.system and apcu
  [Security] Change FormAuthenticator if condition
  handles multi-byte characters in autocomplete
  speed up tests running them without debug flag
  [Translations] added missing Croatian validators
  Fix getItems() performance issue with RedisCluster (php-redis)
  [VarDumper] Keep a ref to objects to ensure their handle cannot be reused while cloning
  IntegerType: reject submitted non-integer numbers
  be keen to newcomers
  [HttpKernel] Fix possible infinite loop of exceptions
  fixed CS
  [Validator] Added missing translations for Afrikaans
  do not validate non-submitted form fields in PATCH requests
  Update usage example in ArrayInput doc block.
  [Console] Prevent ArgvInput::getFirstArgument() from returning an option value
  [Validator] Fixed duplicate UUID
  fixed CS
  [EventDispatcher] Fix unknown priority
  Avoid mutating the Finder when building the iterator
  ...

Author: nicolas-grekas

Transport/AmqpExt/Connection.php

@@ -110,7 +110,7 @@ public static function fromDsn(string $dsn, array $options = [], bool $debug = f
     private static function normalizeQueueArguments(array $arguments): array
     {
         foreach (self::ARGUMENTS_AS_INTEGER as $key) {
-            if (!array_key_exists($key, $arguments)) {
+            if (!\array_key_exists($key, $arguments)) {
                 continue;
             }
 
@@ -256,6 +256,6 @@ private function clear(): void
 
     private function shouldSetup(): bool
     {
-        return !array_key_exists('auto-setup', $this->connectionCredentials) || !\in_array($this->connectionCredentials['auto-setup'], [false, 'false'], true);
+        return !\array_key_exists('auto-setup', $this->connectionCredentials) || !\in_array($this->connectionCredentials['auto-setup'], [false, 'false'], true);
     }
 }