Social groups requires the socialblue theme and breaks some functionalities with a cloned theme

I have cloned the Socialblue theme in order to extend it, as suggested in the theme's readme.md file:

The safest and fastest way to get started is to duplicate this theme and rename it to your custom theme name.

After enabling my new cloned theme, I uninstalled the socialblue theme. I expected that this would be fine because now my cloned theme depends on the socialbase theme. However; when I visit a group's members management page (E.g.: /group/5/membership), I get the following error:

TypeError: Argument 1 passed to Drupal\block\BlockViewBuilder::view() must implement interface Drupal\Core\Entity\EntityInterface, null given, called in /app/html/profiles/contrib/social/modules/social_features/social_group/social_group.module on line 1102 in Drupal\block\BlockViewBuilder->view() (line 30 of /app/html/core/modules/block/src/BlockViewBuilder.php) 

After inspecting the content of social_group.module, I see that a block with ID socialblue_local_actions is being loaded near line 1102:

$entity = \Drupal::entityTypeManager()->getStorage('block')
      ->load('socialblue_local_actions');

Upon further inspection, I see that the block called "Primary admin actions" has the ID socialblue_local_actions on the Socialblue theme; however, the same block has the ID mythemename_local_actions on my cloned theme.

I have fixed the problem by re-enabling the Socialblue theme; but, I think it shouldn't be necessary to have a theme enabled if it isn't going to be used.

A possibly better solution would be to move the function

/**
 * Implements hook_preprocess_HOOK().
 */
function social_group_preprocess_views_view(&$variables) {
  /** @var \Drupal\views\ViewExecutable $view */
  $view = &$variables['view'];

  if ($view->id() === 'group_manage_members') {
    $entity = \Drupal::entityTypeManager()->getStorage('block')
      ->load('socialblue_local_actions');

    $variables['header']['actions'] = \Drupal::entityTypeManager()
      ->getViewBuilder('block')
      ->view($entity);
  }
}

...into the socialblue.theme file and document the necessary string replacements for new cloned themes.

I'd be happy to try this fix and share a patch, if you think this is a good idea.

Thank you for the great work on this distribution.