fix(striker-ui): add empty list message to mail server, recipient management

striker-ui/components/ManageMailRecipient/ManageMailRecipient.tsx

@@ -167,6 +167,7 @@ const ManageMailRecipient: FC = () => {
           children: <>Successfully deleted mail recipient(s).</>,
         })}
         getEditLoading={(previous) => previous || loadingAlertOverrides}
+        listEmpty="No mail recipient(s) found."
         onItemClick={(base, ...args) => {
           const [, mailRecipientUuid] = args;
 

striker-ui/components/ManageMailServer/ManageMailServer.tsx

@@ -27,6 +27,7 @@ const ManageMailServer: FC = () => {
         getDeleteSuccessMessage={() => ({
           children: <>Successfully deleted mail server(s).</>,
         })}
+        listEmpty="No mail server(s) found"
         renderAddForm={(tools) =>
           host && (
             <AddMailServerForm localhostDomain={host.domain} tools={tools} />