backport board scope highlight

app/assets/stylesheets/framework/buttons.scss

@@ -239,6 +239,16 @@
     }
   }
+  &.dot-highlight::after {
+    content: '';
+    background-color: $blue-500;
+    width: $gl-padding * 0.5;
+    height: $gl-padding * 0.5;
+    display: inline-block;
+    border-radius: 50%;
+    margin-left: 3px;
+  }
+
   svg {
     height: 15px;
     width: 15px;