docs: fix error when translating page (#13681)

www/packages/docs-ui/src/components/ContentMenu/Toc/index.tsx

@@ -126,9 +126,12 @@ const TocItem = ({ item, activeItemId }: TocItemProps) => {
           scrollToElement(elm)
         }}
       >
-        {item.id === activeItemId && (
+        <span
-          <span className="absolute left-0 top-0 w-[1.5px] h-full bg-medusa-fg-base rounded-full" />
+          className={clsx(
+            "absolute left-0 top-0 w-[1.5px] h-full bg-medusa-fg-base rounded-full",
+            item.id !== activeItemId && "invisible"
           )}
+        />
         {item.title}
       </Link>
       {(item.children?.length ?? 0) > 0 && (