Jupyter compile-time DF type not recognized

[Jolanrensen]

@ileasile: Noticed interesting thing: if the property has compile-time type DataFrame then it's typed and property accessors are generated. But if it has compile-time type Any, it is not typed in any way and remains Any. Most likely could be fixed on the integration side

it's about onVariable {} and updateVariable{} callbacks - or FieldHandlers in general
We pass compile-time type (KType) to org.jetbrains.kotlinx.jupyter.api.FieldHandler#acceptsType. But we could also provide another handler with runtime type (KClass) if you need. Feel free to ask