message: only show applicable repr types in ui
diff: @@ -157,7 +157,7 @@ const StructureRepresentation3D = PluginStateTransform.BuiltIn({
  return ({
  type: PD.Mapped<any>(
  registry.default.name,
  - registry.types,
  + registry.getApplicableTypes(a.data),
  name => PD.Group<any>(registry.get(name).getParams(themeCtx, a.data))),
  colorTheme: PD.Mapped<any>(
  type.defaultColorTheme,
  