MM-61589 Keep Help and Preview links visible on small screen sizes (#30604)

webapp/channels/src/sass/responsive/_mobile.scss

@@ -617,10 +617,6 @@
             top: 0;
             margin: 8px 0;
         }
-
-        .help__text {
-            display: none;
-        }
     }
 
     .suggestion-list__content {