Consider the following scenario:

1. A user focuses a specific Grid cell through keyboard navigation.
2. The user tabs out of the Grid and then tabs back in.

In this case, the Grid should focus the last focused cell in step 1. Instead the Grid focuses the first header cell.

1. Go to https://demos.telerik.com/blazor-ui/grid/keyboard-navigation 
2. Click a data cell.
3. Click `Tab` or `Shift + Tab` to exit the Grid data area.
4. Click `Shift + Tab` or `Tab` to go back to the Grid data area.
5. Compare with https://www.telerik.com/kendo-angular-ui/components/grid/keyboard-navigation