Merge branch '3.4' into 4.2

* 3.4: (24 commits)
  Apply php-cs-fixer rule for array_key_exists()
  [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
  [Validator] Add the missing translations for the Greek (el) locale
  ...

Author: nicolas-grekas

Data/Generator/LocaleDataGenerator.php

@@ -164,7 +164,7 @@ private function generateLocaleName($locale, $displayLocale)
         // the name sorting
         // $name = $this->langBundle->getLanguageName($displayLocale, $lang, $region);
 
-        // Some languages are simply not translated
+        // Some languages are not translated
         // Example: "az" (Azerbaijani) has no translation in "af" (Afrikaans)
         if (null === ($name = $this->languageDataProvider->getName($lang, $displayLocale))) {
             return;

Data/Util/RecursiveArrayAccess.php

@@ -25,7 +25,7 @@ public static function get($array, array $indices)
         foreach ($indices as $index) {
             // Use array_key_exists() for arrays, isset() otherwise
             if (\is_array($array)) {
-                if (array_key_exists($index, $array)) {
+                if (\array_key_exists($index, $array)) {
                     $array = $array[$index];
                     continue;
                 }

NumberFormatter/NumberFormatter.php

@@ -460,7 +460,7 @@ public function getPattern()
      */
     public function getSymbol($attr)
     {
-        return array_key_exists($this->style, self::$enSymbols) && array_key_exists($attr, self::$enSymbols[$this->style]) ? self::$enSymbols[$this->style][$attr] : false;
+        return \array_key_exists($this->style, self::$enSymbols) && \array_key_exists($attr, self::$enSymbols[$this->style]) ? self::$enSymbols[$this->style][$attr] : false;
     }
 
     /**
@@ -474,7 +474,7 @@ public function getSymbol($attr)
      */
     public function getTextAttribute($attr)
     {
-        return array_key_exists($this->style, self::$enTextAttributes) && array_key_exists($attr, self::$enTextAttributes[$this->style]) ? self::$enTextAttributes[$this->style][$attr] : false;
+        return \array_key_exists($this->style, self::$enTextAttributes) && \array_key_exists($attr, self::$enTextAttributes[$this->style]) ? self::$enTextAttributes[$this->style][$attr] : false;
     }
 
     /**