Fix Top Header layout following changes in the Shadcn Sidebar;

Fix useMobile breakpoint to 1024px, to match our Tailwind convention for mobile breakpoints (lg)

packages/ui/src/hooks/use-mobile.tsx

@@ -1,6 +1,6 @@
 import * as React from 'react';
 
-const MOBILE_BREAKPOINT = 768;
+const MOBILE_BREAKPOINT = 1024;
 
 export function useIsMobile() {
   const [isMobile, setIsMobile] = React.useState<boolean | undefined>(