test(date-picker): properly focus with no click, #6471

Author: wnvko

projects/igniteui-angular/src/lib/date-picker/date-picker.component.spec.ts

@@ -1298,7 +1298,7 @@ describe('IgxDatePicker', () => {
 
             expect(inputDirective.valid).toEqual(IgxInputState.INITIAL);
 
-            UIInteractions.clickElement(datePickerOnBlurComponent.getEditElement());
+            datePickerOnBlurComponent.onFocus();
             fixture.detectChanges();
 
             expect(inputDirective.valid).toEqual(IgxInputState.INITIAL);