Merge branch '6.4' into 7.1

* 6.4:
  fix detecting anonymous exception classes on Windows and PHP 7
  skip tests requiring the intl extension if it's not installed
  [RateLimiter] Fix DateInterval normalization
  [Security] Store original token in token storage when implicitly exiting impersonation
  [Cache] Fix clear() when using Predis

Author: nicolas-grekas

Application.php

@@ -840,7 +840,7 @@ protected function doRenderThrowable(\Throwable $e, OutputInterface $output): vo
             }
 
             if (str_contains($message, "@anonymous\0")) {
-                $message = preg_replace_callback('/[a-zA-Z_\x7f-\xff][\\\\a-zA-Z0-9_\x7f-\xff]*+@anonymous\x00.*?\.php(?:0x?|:[0-9]++\$)[0-9a-fA-F]++/', fn ($m) => class_exists($m[0], false) ? (get_parent_class($m[0]) ?: key(class_implements($m[0])) ?: 'class').'@anonymous' : $m[0], $message);
+                $message = preg_replace_callback('/[a-zA-Z_\x7f-\xff][\\\\a-zA-Z0-9_\x7f-\xff]*+@anonymous\x00.*?\.php(?:0x?|:[0-9]++\$)?[0-9a-fA-F]++/', fn ($m) => class_exists($m[0], false) ? (get_parent_class($m[0]) ?: key(class_implements($m[0])) ?: 'class').'@anonymous' : $m[0], $message);
             }
 
             $width = $this->terminal->getWidth() ? $this->terminal->getWidth() - 1 : \PHP_INT_MAX;