Ensure COOKiES runs last for libraries

Problem/Motivation

Just saw the following code in Klaro and think that totally makes sense:

/**
 * Implements hook_module_implements_alter().
 */
function klaro_module_implements_alter(&$implementations, $hook) {
  switch ($hook) {
    case 'js_alter':
    case 'page_attachments_alter':
      // Ensure our hooks run last to support libraries added by other modules.
      $group = $implementations['klaro'];
      unset($implementations['klaro']);
      $implementations['klaro'] = $group;
      break;
  }
}

But the situation might be a bit different here for us, because we run these hooks in the submodules!

Steps to reproduce

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes