Hgrid: Missing border in the header of the first column in child grid

[MarielaTihova]

Description

The border in the header of the first column in child grid is missing

• igniteui-angular version: 19.0.x
• browser:

Steps to reproduce

1. Create a hierarchical grid
2. Observe the header

Result

Border Missing

Expected result

Border should be there for all columns

Attachments