fix(excel-filtering): update variant mapping / use button type-style#16697

simeonoff merged 3 commits into21.0.xIgniteUI/igniteui-angular:21.0.xfrom

didimmova/fix-excel-filter-issues-21.0.xIgniteUI/igniteui-angular:didimmova/fix-excel-filter-issues-21.0.xCopy head branch name to clipboard