fix(www/components): does not match other buttons and styles (#26922)

Co-authored-by: Francesco Sansalvadore <f.sansalvadore@gmail.com>

apps/www/components/Nav/MobileMenu.tsx

@@ -188,7 +188,7 @@ const MobileMenu = ({ open, setOpen, isDarkMode, menu }: Props) => {
                     <>
                       <Link href="https://supabase.com/dashboard" passHref legacyBehavior>
                         <Button block type="default" asChild>
-                          <a type={undefined} className="">
+                          <a type={undefined} className="h-10 py-4">
                             Sign in
                           </a>
                         </Button>