fix: correct Unraid CPU, link context menus, and board resizing (#6510)

Fix Unraid logical CPU averaging, preserve native context menus for app and bookmark widgets in view mode, and prevent scrollbar-width GridStack resize oscillation.

apps/nextjs/src/components/board/items/widget-context-menu.tsx

@@ -44,9 +44,13 @@ interface WidgetContextMenuProps {
 
 export const WidgetContextMenu = ({ item, definition, widgetStateRef, children }: WidgetContextMenuProps) => {
   const { data: session } = useSession();
+  const [isEditMode] = useEditMode();
   const settings = useSettings();
 
   if (!session || !settings.enableRightClickOnWidgets) return <>{children}</>;
+  const isLinkWidget = item.kind === "app" || item.kind === "bookmarks";
+  // Keep the Homarr menu in edit mode so these widgets can still be edited or removed.
+  if (isLinkWidget && !isEditMode) return <>{children}</>;
 
   return (
     <WidgetContextMenuInner item={item} definition={definition} widgetStateRef={widgetStateRef} settings={settings}>