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

ErrorHandler.php

@@ -742,6 +742,6 @@ private function cleanTrace(array $backtrace, int $type, string &$file, int &$li
      */
     private function parseAnonymousClass(string $message): string
     {
-        return preg_replace_callback('/[a-zA-Z_\x7f-\xff][\\\\a-zA-Z0-9_\x7f-\xff]*+@anonymous\x00.*?\.php(?:0x?|:[0-9]++\$)[0-9a-fA-F]++/', static fn ($m) => class_exists($m[0], false) ? (get_parent_class($m[0]) ?: key(class_implements($m[0])) ?: 'class').'@anonymous' : $m[0], $message);
+        return preg_replace_callback('/[a-zA-Z_\x7f-\xff][\\\\a-zA-Z0-9_\x7f-\xff]*+@anonymous\x00.*?\.php(?:0x?|:[0-9]++\$)?[0-9a-fA-F]++/', static fn ($m) => class_exists($m[0], false) ? (get_parent_class($m[0]) ?: key(class_implements($m[0])) ?: 'class').'@anonymous' : $m[0], $message);
     }
 }

Exception/FlattenException.php

@@ -228,7 +228,7 @@ public function getMessage(): string
     public function setMessage(string $message): static
     {
         if (str_contains($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);
         }
 
         $this->message = $message;