Bug 1399747 - Density panel menuitems should use `font: menu` to be consistent with other panels. r=johannh

MozReview-Commit-ID: 8kZpDfut3Mc

--HG--
extra : rebase_source : 253dd36cc1395cabced55a0a296f308636f6fa2e

browser/themes/shared/customizableui/customizeMode.inc.css

@@ -371,6 +371,10 @@ toolbarpaletteitem[place=toolbar] > toolbarspring {
   text-align: start;
 }
 
+.customization-uidensity-menuitem > .menu-iconic-text {
+  font: menu;
+}
+
 #customization-lwtheme-menu-header,
 #customization-lwtheme-menu-recommended {
   padding: 10px;