feat: preserve pagination offset after review delete

crates/adapters/template-askama/templates/activity_feed.html

@@ -30,6 +30,7 @@
       </div>
       {% if ctx.is_current_user(entry.review().user_id().value()) %}
       <form method="post" action="/reviews/{{ entry.review().id().value() }}/delete" class="delete-form">
+        <input type="hidden" name="redirect_after" value="/?offset={{ current_offset }}">
         <button type="submit">Delete</button>
       </form>
       {% endif %}