fix(grid): fix excel style filtering regressions and bump theming version#16685

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

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