[UI] Fix NewsWidget (#12205)

src/frontend/src/components/dashboard/widgets/NewsWidget.tsx

@@ -130,9 +130,13 @@ export default function NewsWidget() {
                   <NewsItem key={item.pk} item={item} onMarkRead={markRead} />
                 ))
               ) : (
+                <Table.Tr>
+                  <Table.Td colSpan={3}>
                     <Alert color='green' title={t`No News`}>
                       <Text>{t`There are no unread news items`}</Text>
                     </Alert>
+                  </Table.Td>
+                </Table.Tr>
               )}
             </Table.Tbody>
           </Table>