[CrOS Wallpaper] Line height too short, causing text cutoff in arabic.

Currently, in arabic, author names that are too long are cutoff when
the text is too long.  This CL ensures that the line height is the
same as the font height so that the author name fits entirely.

Screenshot (before): https://screenshot.googleplex.com/oYJHABz3ej6
Screenshot (after): https://screenshot.googleplex.com/kgFDtyhicRN

Bug: 1029934
Change-Id: Id79283e43bc09ab2706580de1fbfe3da892e732b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1959626Reviewed-by: Xiaoqian Dai <xdai@chromium.org>
Commit-Queue: Regan Hsu <hsuregan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#723465}

chrome/browser/resources/chromeos/wallpaper_manager/css/wallpaper_manager.css

@@ -801,6 +801,7 @@ html[dir='rtl'] .daily-refresh-label {
 #current-wallpaper-title {
   color: rgb(32, 33, 36);
   font-size: 14px;
+  line-height: 14px;
   padding-top: 9px;
 }