Fixed issue of drop-down arrow direction in cart price rule

Author: hiren0241

app/design/adminhtml/Magento/backend/web/css/styles-old.less

@@ -820,7 +820,7 @@
 
             padding-right: 44px;
 
-            &:focus {
+            &:active {
                 background-image+: url('../images/arrows-bg.svg');
                 background-position+: ~'calc(100% - 12px)' 13px;