refactor: error handler callback to return false

system/Debug/Exceptions.php

@@ -147,17 +147,19 @@ public function exceptionHandler(Throwable $exception)
  *
  * This seems to be primarily when a user triggers it with trigger_error().
  *
+ * @return bool
+ *
  * @throws ErrorException
  *
  * @codeCoverageIgnore
  */
  public function errorHandler(int $severity, string $message, ?string $file = null, ?int $line = null)
  {
- if (! (error_reporting() & $severity)) {
- return;
+ if (error_reporting() & $severity) {
+ throw new ErrorException($message, 0, $severity, $file, $line);
  }
 
- throw new ErrorException($message, 0, $severity, $file, $line);
+ return false; // return false to propagate the error to PHP standard error handler
  }
 
  /**