Fix displaying anonymous classes on PHP >= 7.4.2

Author: nicolas-grekas

Application.php

@@ -796,7 +796,7 @@ protected function doRenderException(\Exception $e, OutputInterface $output)
             }
 
             if (false !== strpos($message, "class@anonymous\0")) {
-                $message = preg_replace_callback('/class@anonymous\x00.*?\.php(?:0x?|:)[0-9a-fA-F]++/', function ($m) {
+                $message = preg_replace_callback('/class@anonymous\x00.*?\.php(?:0x?|:[0-9]++\$)[0-9a-fA-F]++/', function ($m) {
                     return class_exists($m[0], false) ? get_parent_class($m[0]).'@anonymous' : $m[0];
                 }, $message);
             }