feat: remove value_prop_cookie to show the Notification feature in courseware (#524)

Part 4 of REV-2130

src/courseware/course/NotificationTrigger.scss

@@ -14,6 +14,11 @@
     }
 }
 
-.active {
-    border-bottom: 3px solid $primary-700;
+.active::after {
+    content: '';
+    position: absolute;
+    border-bottom: 2px solid $primary-700;
+    right: 0;
+    left: 0;
+    bottom: -1px;
 }