Focus indicator is not visible on the table when focus lands on the table while navigating using tab key.

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Issue: Focus indicator is not visible on the table when focus lands on the table while navigating using tab key.

Test Environment: OS: Windows_11 Version: 21H2 OS Build: 22000.795 Browser: Version 103.0.1264.71 (Official Build) (64-bit)

Repro steps:

1. Open https://www.infragistics.com/products/ignite-ui-angular/angular/components/grid/excel-style-filtering in edge browser.
2. Angular excel style filtering page will open.
3. Reach to the main landmark content where ' Examples' tab is selected.
4. With 6-tab press, reach to the column header of the available table.
5. Verify the issue that the keyboard focus is visible on the complete table content.

Actual Result: The focus indicator is not visible on the table when the focus lands on the table while navigating using the tab key.

Expected Result:

The focus indicator should be visible on the table when the focus lands on the table while navigating using the tab key.