TermGlossaryHandlerPluginManager cache key conflict

Problem/Motivation

We are currently using the cache key of the password policy constraint plugins.

Probably a bad copy and paste.

  public function __construct(\Traversable $namespaces, CacheBackendInterface $cache_backend, ModuleHandlerInterface $module_handler) {
    parent::__construct('Plugin/TermGlossaryHandler', $namespaces, $module_handler, 'Drupal\term_glossary\TermGlossaryHandlerInterface', 'Drupal\term_glossary\Annotation\TermGlossaryHandler');
    $this->alterInfo('term_glossary_handler_info');
    $this->setCacheBackend($cache_backend, 'password_policy_constraint');
  }