#874 ScriptServlet doesn't show per-renderer decorators

[Jeremy Faden]

The script
https://github.com/autoplot/dev/blob/master/demos/2026/20260605/demoRendererDecorator.jy
demonstrates the lost feature where each renderer can have a top and bottom decorator, allowing decorations to be placed between renderers. However, I notice Autoplot's ScriptGuiServlet doesn't draw them, and I need to track down why this is.

Loading the script and saving the display as a png works fine, so I'm not sure what the difference would be.