fix: css badge

src/styles/base/menu-left.scss

@@ -136,7 +136,7 @@
               height: 20px;
               width: 20px;
               margin-right: 1em;
-              div:not(:empty) {
+              div.counter:not([data-nb-unread="0"]) {
                 text-align: center;
                 display: block;
                 background-color: var(--sib-notifications-theme, gray);