When loading layout test results, if the response from the server is an empty array, the dashboard shows nothing in the canvas. In the interest of user-friendliness, it would be better to have a "No Results" screen in this case.
<rdar://problem/113864624>
Committed 266916@main (9b47de8376bf): <https://commits.webkit.org/266916@main> Reviewed commits have been landed. Closing PR #16680 and removing active labels.