I incorrectly used the ds property for dataset attributes in the VDOM configuration, which resulted in ds="[object Object]" being rendered in the DOM.

Correction:
Neo.mjs VDOM uses the data property to map to dataset attributes.

Task:
Update src/grid/Row.mjs to use data: { cellId: ... } instead of ds: { cellId: ... }. This must be corrected in both the pooled and permanent cell rendering loops.