Reset link is active when only a child is selected

In a facet with the LinksWidget and an expanded hierarchy (with taxonomy terms), when I select only a children (not a first level item), the reset link is active (with the class is-active). I join a screenshot to demonstrate it.

The problem seems to be in \Drupal\facets\Plugin\facets\widget\LinksWidget, line 84

// Check if any other facet is in use.
$none_active = TRUE;
foreach ($results as $result) {
  if ($result->isActive()) {
     $none_active = FALSE;
         break;
    }
}
// Add an is-active class when no other facet is in use.
if ($none_active) {
    $item['#attributes'] = ['class' => ['is-active']];
}

This loop check only the first level, not for the childrens inside a Result.
To make it work with a hierarchy we will need something like

      foreach ($results as $result) {
        if ($result->isActive()) {
          $none_active = FALSE;
          break;
        }
        if ($childrens = $result->getChildren()) {
          foreach ($childrens as $children_result) {
            if ($children_result->isActive()) {
              $none_active = FALSE;
              break;
            }
          }
        }
      }

But this is not recursive, and not ready.
I will try to propose a patch soon (probably end of the week).