feat(conversation): #WB-3834 draft list message preview (#620)

* feat(conversation): #WB-3834 draft - show recipient rather than sender in message list

* feat(conversation): #WB-3834 draft - show draft label before recipient list

* feat(conversation): #WB-3834 draft - hide "at" label before recipient list + improve accessibility

* feat(conversation): #WB-3834 draft - possible to have any recipients

* feat(conversation): #WB-3834 draft - add empty recipient icon

* fix(conversation): #WB-3834 draft - review

* fix(conversation): #WB-3834 draft - review - add system folder id

* fix(conversation): #WB-3834 draft - review

* fix(conversation): #WB-3834 draft -  add SystemFolder type for useSelectedFolder hook

Author: damienromito

conversation/frontend/src/components/MessageRecipientList.tsx

@@ -1,5 +1,6 @@
 import clsx from 'clsx';
-import { Fragment, ReactNode } from 'react';
+import { ReactNode } from 'react';
+import { useTranslation } from 'react-i18next';
 import { Recipients } from '~/models';
 import { MessageRecipientListItem } from './MessageRecipientListItem';
 import { useTranslation } from 'react-i18next';