Support maxBookmarkGroupColumns too

src/components/bookmarks/group.jsx

@@ -12,6 +12,7 @@ export default function BookmarksGroup({
   disableCollapse,
   groupsInitiallyCollapsed,
   bookmarksStyle,
+  maxGroupColumns,
 }) {
   const panel = useRef();
 
@@ -25,6 +26,9 @@ export default function BookmarksGroup({
       className={classNames(
         "bookmark-group flex-1 overflow-hidden",
         layout?.style === "row" ? "basis-full" : "basis-full md:basis-1/4 lg:basis-1/5 xl:basis-1/6",
+        layout?.style !== "row" && maxGroupColumns && parseInt(maxGroupColumns, 10) > 6
+          ? `3xl:basis-1/${maxGroupColumns}`
+          : "",
         layout?.header === false ? "px-1" : "p-1 pb-0",
       )}
     >