Saving map layer settings for a dataset calls the wrong URL

When changes to a dataset map layer settings are saved, a request to `/catalogue` instead of `/geoserver` is used.

<img width="1900" height="942" alt="Image" src="https://github.com/user-attachments/assets/fc85e99a-6025-4a76-86d6-9e8aa7dffe96" />

