Prepares variables for.
Default template: paragraphs-summary.html.twig
array $variables: An associative array containing:
function template_preprocess_paragraphs_summary(&$variables) {
$variables['content'] = $variables['element']['#summary']['content'];
$variables['behaviors'] = $variables['element']['#summary']['behaviors'];
$variables['expanded'] = !empty($variables['element']['#expanded']);
}