IgxHierarchicalGrid: cell copying yields wrong results when previous rows are expanded

[ddaribo]

Description

Copying cells does not yield expected results when there are expanded rows, placed before the rows that are being copied.

• igniteui-angular version: 15.x, 14.2.x
• browser: any

Steps to reproduce

1. Open any hierarchical grid sample, for instance this one.
2. Expand arbitrary rows - for example the ones with "Artist" values "Naomí Yepes" and "Ahmad Nazeri".
3. Select a cell/cells from any row below the expanded ones - for example the row with "Artist" value "Eva Lee".
4. Copy the cell/s - CTRL + "C".
5. Paste anywhere.

Result

The copied and pasted value is "Artist Pablo Cambeiro", so it corresponds to the cell from the row that is as many rows below the selected one, as the number of expanded rows above (2 in this example).
Valid for child grids as well.

Expected result

The pasted value to be the one that was selected and copied - "Artist Eva Lee".

Attachments

In case a previous row is not expanded, the copy operation result is correct: