MRL keyboard navigation is broken after horizontal scroll.

[MayaKirova]

Description

After scrolling right, navigation in grid with MRL stops working.

• igniteui-angular version: 21.1.0-rc0
• browser: N/A

Steps to reproduce

1. Open sample with MRL that has a horizontal scrollbar, for example:
   https://staging.infragistics.com/products/ignite-ui-angular/angular/components/grid/multi-row-layout#angular-multi-row-layout-example
   But same happens in dev samples too.
2. Scroll to the right
3. Click a cell from the end of the row
4. Try to navigate with the keyboard arrow keys

Result

Nothing happens.

Expected result

Navigation should occur and the active cell should change.