chore(*): Try fixing unrelated failing tab test.

Author: Svetoslav Krastev

projects/igniteui-angular/src/lib/grids/grid/grid.component.spec.ts

@@ -2376,6 +2376,8 @@ describe('IgxGrid Component Tests #grid', () => {
             tab.items.toArray()[1].selected = true;
             await wait(100);
             fix.detectChanges();
+            await wait(100);
+            fix.detectChanges();
 
             grid.navigateTo(grid.data.length - 1, grid.columnList.length - 1);
             await wait(100);