Empty grids or grids with a selected item shouldn't be tab reachable at all
Empty grids or grids with a selected item shouldn't be tab reachable at all

Note: We can't use undefined here since that'll mean that the
defaultProps of Grid will take precedence

j-f1/forked-desktop,BugTesterTest/desktops,hjobrien/desktop,kactus-io/kactus,desktop/desktop,BugTesterTest/desktops,hjobrien/desktop,BugTesterTest/desktops,desktop/desktop,desktop/desktop,say25/desktop,shiftkey/desktop,j-f1/forked-desktop,gengjiawen/desktop,artivilla/desktop,kactus-io/kactus,artivilla/desktop,j-f1/forked-desktop,shiftkey/desktop,gengjiawen/desktop,kactus-io/kactus,say25/desktop,kactus-io/kactus,say25/desktop,j-f1/forked-desktop,shiftkey/desktop,desktop/desktop,hjobrien/desktop,shiftkey/desktop,gengjiawen/desktop,BugTesterTest/desktops,artivilla/desktop,gengjiawen/desktop,artivilla/desktop,hjobrien/desktop,say25/desktop