fix(grid): add background-clip to filtering cell style - 21.0.x#16795

IMinchev64 wants to merge 2 commits into21.0.xIgniteUI/igniteui-angular:21.0.xfrom

iminchev/pinned-filtering-cell-border-21.0.xIgniteUI/igniteui-angular:iminchev/pinned-filtering-cell-border-21.0.xCopy head branch name to clipboard