Header Search example is always showing burger menu

burger menu is expected to display only in smaller screens like the other examples.
Looks like the styling code for burger is missing in this particular example:

https://ui.mantine.dev/component/header-search
https://github.com/mantinedev/ui.mantine.dev/blob/master/components/HeaderSearch/HeaderSearch.tsx

Start in components/HeaderSearch/HeaderSearch.tsx and compare its burger-menu behavior with the other examples linked in the issue. Check how the example currently behaves at different screen sizes; done means the burger menu appears only on smaller screens, matching the other examples.

Written by the indexing model from the issue text.