How to use DataGridPro as an external in a custom workflow activity?

We're building a custom workflow form element that uses MUIX DataGridPro for an editable feature table.

We noticed @vertigis/web/ui/DataGridPro that it exists in the type definitions and DataGridPro.d.ts re-exports from @vertigis/react-ui/DataGrid. However, index.d.ts in the same folder is empty (export {}).

Currently we're bundling @mui/x-data-grid-pro directly with a webpack carve-out. We'd like to consume it as an external from the host instead.

1. Is @vertigis/web/ui/DataGridPro available as an AMD external at runtime for workflow activity packs?
2. If yes, what's the correct import path for both the component and named exports (GridColDef, GridToolbar*, etc.)?
3. Is the empty index.d.ts intentional or a packaging issue?

Thanks