[ErrorHandler] Don't format binary strings

Calling var_export on a binary string easily causes memory exhaustion if
it's called with even a small image.

Fixes #53005

Author: aleho

Extension/CodeExtension.php

@@ -97,8 +97,10 @@ public function formatArgs(array $args): string
                 $formattedValue = '<em>'.strtolower(htmlspecialchars(var_export($item[1], true), \ENT_COMPAT | \ENT_SUBSTITUTE, $this->charset)).'</em>';
             } elseif ('resource' === $item[0]) {
                 $formattedValue = '<em>resource</em>';
+            } elseif (preg_match('/[^\x07-\x0D\x1B\x20-\xFF]/', $item[1])) {
+                $formattedValue = '<em>binary string</em>';
             } else {
-                $formattedValue = str_replace("\n", '', htmlspecialchars(var_export($item[1], true), \ENT_COMPAT | \ENT_SUBSTITUTE, $this->charset));
+                $formattedValue = str_replace("\n", '', $this->escape(var_export($item[1], true)));
             }
 
             $result[] = \is_int($key) ? $formattedValue : sprintf("'%s' => %s", htmlspecialchars($key, \ENT_COMPAT | \ENT_SUBSTITUTE, $this->charset), $formattedValue);