Field type annotation doesn't have a description

Problem/Motivation

After recent core update this issue arises. Field type doesn't have annotation, which causes exception:

TypeError: Drupal\Core\Field\FieldTypeCategory::getDescription(): Return value must be of type Drupal\Core\StringTranslation\TranslatableMarkup, string returned in Drupal\Core\Field\FieldTypeCategory->getDescription() (line 26 of core/lib/Drupal/Core/Field/FieldTypeCategory.php).

Steps to reproduce

Go to Configuration -> People -> Account settings -> Manage fields and add new field.