fix(grid): Setup columns when autoGenerate is set after the grid data - 20.1.x#16846

mddragnev wants to merge 5 commits into20.1.xIgniteUI/igniteui-angular:20.1.xfrom

mdragnev/fix-16830-20.1.xIgniteUI/igniteui-angular:mdragnev/fix-16830-20.1.xCopy head branch name to clipboard