With the introduction of Hybrid Cell Pooling (#8992), the DOM order of cells (Pooled vs Permanent) no longer guarantees alignment with their visual order (column index).
Consequently, the CSS rule &:last-child on .neo-grid-cell incorrectly targets the last rendered DOM node (which might be a pooled cell in the middle of the grid, or a permanent cell rendered last) instead of the visually last column. This results in incorrect right-borders.

Solution:

1. Update Neo.grid.Row to calculate which column is the last visible column and apply a specific CSS class (e.g., neo-last-column) to its corresponding cell.
2. Update resources/scss/src/grid/Body.scss to use .neo-last-column instead of &:last-child for removing the right border.

Note: This logic must account for both pooled and permanent cells.