add back border to preview

inspector/src/components/actionTabs/actionTabs.scss

@@ -801,7 +801,7 @@ $line-padding-left: 2px;
                         width: 256px;
                         margin-top: 5px;
                         margin-bottom: 5px;
-                        border: 0;
+                        border: 1px solid white;
                         background-size: 32px 32px;
                         background-color: white;
                         background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 2 2'%3E%3Cpath fill='rgba(1.0,1.0,1.0,0.3)' fill-rule='evenodd' d='M0 0h1v1H0V0zm1 1h1v1H1V1z'/%3E%3C/svg%3E");