[Form] Use duplicate_preferred_choices to set value of ChoiceType

When the preferred choices are not duplicated an option has to be
selected in the group of preferred choices.

Closes #58561

Author: aleho

Extension/Core/Type/ChoiceType.php

@@ -281,6 +281,8 @@ public function buildView(FormView $view, FormInterface $form, array $options)
      */
     public function finishView(FormView $view, FormInterface $form, array $options)
     {
+        $view->vars['duplicate_preferred_choices'] = $options['duplicate_preferred_choices'];
+
         if ($options['expanded']) {
             // Radio buttons should have the same name as the parent
             $childName = $view->vars['full_name'];