New navigation: Simplify logo detection

<?php

/**

 * @file

 * navigation.theme

 */

 use Drupal\gin\GinSettings;

/**

 * Implements hook_navigation().

 */

function gin_preprocess_navigation(&$variables) {

  // Get theme configs.

  /** @var \Drupal\gin\GinSettings $settings */

  $settings = \Drupal::classResolver(GinSettings::class);

  $logo_path = $settings->getDefault('logo.path');

  $logo_default = $settings->getDefault('logo.use_default');

  $variables['icon_default'] = $logo_default;

  if (!$logo_default) {

    $variables['icon_path'] = $logo_path;

  }

}

<?php

/**

 * @file

 * theme.theme

 */

 use Drupal\gin\GinSettings;

/**

 * Implements hook_theme().

 */

function gin_theme() {

  // Get theme configs.

  /** @var \Drupal\gin\GinSettings $settings */

  $settings = \Drupal::classResolver(GinSettings::class);

  $logo_default = $settings->getDefault('logo.use_default');

  $icon_path = '';

  if (!$logo_default) {

    $icon_path = $settings->getDefault('logo.path');

  }

  $items['navigation'] = [

    'variables' => [

      'icon_path' => $icon_path,

      'path' => \Drupal::service('extension.list.theme')->getPath('gin'),

      'menu_middle' => [],

      'menu_top' => [],