Navigation with Tab is not correct when a row is expanded

[nrobakova]

Description

Navigation with Tab is not correct when a row is expanded

• igniteui-angular version: 7.3
• browser: n/a

Steps to reproduce

1.Open dev sample hierarchicalGridUpdating
2. Expand row with id AROUT
3. In the row with BERGS click on cell in column Phone
4. Press Tab key

Result

Cell in the child grid is selected

Expected result

Cell in row with id BLAUS and column CustemerId should be selected