UX: add missing btn-default (#255)

Author: chapoi

assets/javascripts/discourse/components/activity-pub-actor-admin-row.gjs

@@ -123,7 +123,7 @@ export default class ActivityPubActorAdminRow extends Component {
             @label="admin.discourse_activity_pub.actor.edit.label"
             @title="admin.discourse_activity_pub.actor.edit.title"
             @icon="pencil"
-            class="activity-pub-edit-actor-btn"
+            class="btn-default activity-pub-edit-actor-btn"
           />
         {{/if}}
       </div>

assets/javascripts/discourse/templates/admin-plugins/activity-pub/log.gjs

@@ -72,7 +72,7 @@ export default RouteTemplate(
                       @icon="code"
                       @label="admin.discourse_activity_pub.log.json.show.label"
                       @title="admin.discourse_activity_pub.log.json.show.title"
-                      class="activity-pub-log-show-json-btn"
+                      class="btn-default activity-pub-log-show-json-btn"
                     />
                   {{/if}}
                 </div>