There is no focus state on tabs

[grozevg]

Bug report

The focus settings for the TabStrip control don't have any effect: Even if the tab has the keyboard focus it's not visually changing.

Reproduction of the problem

1. Add a focus style for the tab item (e.g. .k-tabstrip .k-tabstrip-item::focus, .k-tabstrip .k-tabstrip-item.k-focus {background: green;})
2. Click on any item
3. There in no applied styles

Expected/desired behavior

Correct focus state like in Kendo Angular TabStrip

[grozevg]

#1614089