Replace text-align classes with tailwind (#33905)

Small refactor to remove these CSS classes in favor of tailwind.

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Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

templates/shared/actions/runner_list.tmpl

@@ -87,7 +87,7 @@
 					{{end}}
 				{{else}}
 					<tr>
-						<td class="center aligned" colspan="8">{{ctx.Locale.Tr "actions.runners.none"}}</td>
+						<td class="tw-text-center" colspan="8">{{ctx.Locale.Tr "actions.runners.none"}}</td>
 					</tr>
 				{{end}}
 			</tbody>