Overrides \Drupal\user\Plugin\views\field\User::init().
Add uid in the query so we can test for anonymous if needed.
Overrides User::init
public function init(ViewExecutable $view, DisplayPluginBase $display, array &$options = NULL) {
parent::init($view, $display, $options);
if (!empty($this->options['overwrite_anonymous']) || !empty($this->options['format_username'])) {
$this->additional_fields['uid'] = 'uid';
}
}