ENGCOM-7803: Improvements webfont loading for theme #29044

 - Merge Pull Request #29044 from mrtuvn/magento2:theme-improvements-webfont-preload
 - Merged commits:
   1. be3c1ec

Author: magento-engcom-team

app/design/frontend/Magento/blank/web/css/source/_icons.less

@@ -8,6 +8,7 @@
         @family-name: @icons__font-name,
         @font-path: @icons__font-path,
         @font-weight: normal,
-        @font-style: normal
+        @font-style: normal,
+        @font-display: block
     );
 }