Fix UIA state announcements for CheckBox #14674

LeafShi1 wants to merge 4 commits into

dotnet:maindotnet/winforms:mainfrom

LeafShi1:Fix_14669_CheckBoxs_don't_read_state_to_ScreenReadersLeafShi1/winforms:Fix_14669_CheckBoxs_don't_read_state_to_ScreenReadersCopy head branch name to clipboard