Allow editing and resetting of all admin setting strings

app/views/admin/settings/services/_gitea.html.erb

@@ -8,10 +8,9 @@
     description: "Gitea configuration present and features enabled"
   ) %>
   <% if Setting.gitea_enabled? %>
-    <%= render FormElements::FieldsetComponent.new(title: "Public URL") do %>
-      <%= f.text_field :gitea_public_url,
-        value: Setting.gitea_public_url,
-        class: "w-full", disabled: true %>
-    <% end %>
+    <%= render FormElements::FieldsetResettableSettingComponent.new(
+          key: :gitea_public_url,
+          title: "Public URL"
+        ) %>
   <% end %>
 </ul>