fix: archived chats modal styling

src/lib/components/layout/Sidebar/ArchivedChatsModal.svelte

@@ -75,7 +75,7 @@
 								>
 									<tr>
 										<th scope="col" class="px-3 py-2"> {$i18n.t('Name')} </th>
-										<th scope="col" class="px-3 py-2"> {$i18n.t('Created At')} </th>
+										<th scope="col" class="px-3 py-2 hidden md:flex"> {$i18n.t('Created At')} </th>
 										<th scope="col" class="px-3 py-2 text-right" />
 									</tr>
 								</thead>
@@ -93,7 +93,7 @@
 												</a>
 											</td>
 
-											<td class=" px-3 py-1">
+											<td class=" px-3 py-1 hidden md:flex">
 												{dayjs(chat.created_at * 1000).format($i18n.t('MMMM DD, YYYY HH:mm'))}
 											</td>