AddLabelHtml missing on Dynamic and Static gumps

<img width="242" height="88" alt="Image" src="https://github.com/user-attachments/assets/208b7f5a-c04b-45b5-bbaa-e34dea8f1d46" />

Please see the image above. This is from the SpawnControllerGump. It is a basic Gump which has access to AddLabelHtml method and allows adding this nice font that is smaller and quite useful for complex gumps.

This method is missing for Dynamic and Static gumps.
