Session is not set when generating PDFs using commands (eg queue workers)

All changes in MR.

Patch applied and no more Session is not set. error when running the following code during the drush queue:run.

      $session_handler = \Drupal::service('session_handler.write_safe');
      $this->accountSwitcher->switchTo(new UserSession(['uid' => 1]));
      $session_handler->setSessionWritable(TRUE);
...
        // Generate PDF (new instance of engine required).
        $print_engine = $this->entityPrintPluginManager->createSelectedInstance('pdf');
        $this->printBuilder->savePrintable([$node], $print_engine, $scheme, $location, TRUE, $view_mode);

patch applied and fixed the error in our `drush cron`

thanks