Ability to add text / buttons when the cell is empty

[MorneBester]

Currently, when the cell is empty, there is no way to add an object. For example, it would be nice to add an object or show a text from the dynamic datagrid cell where the cell is empty. When creating an object, the relevant column object and row object should be passed as available objects.

[Andries-Smit]

The current widget structure could not support such a feature.
The context of a cell, is a single cell object, when there is no cell object you need both column and row objects as a context, however the Mendix pluggable API technically does not support passing multiple context objects for widget rendering.

https://docs.mendix.com/apidocs-mxsdk/apidocs/pluggable-widgets-client-apis-list-values/#listwidgetvalue