fix(theme-classic): make nav dropdowns focusable (#6003)

Co-authored-by: sebastienlorber <lorber.sebastien@gmail.com>

packages/docusaurus-theme-classic/src/theme/NavbarItem/DropdownNavbarItem.tsx

@@ -86,6 +86,7 @@ function DropdownNavbarItemDesktop({
         'dropdown--show': showDropdown,
       })}>
       <NavLink
+        href={props.to ? undefined : '#'}
         className={clsx('navbar__link', className)}
         {...props}
         onClick={props.to ? undefined : (e) => e.preventDefault()}

packages/docusaurus-theme-classic/src/theme/NavbarItem/LocaleDropdownNavbarItem/index.tsx

@@ -53,7 +53,6 @@ export default function LocaleDropdownNavbarItem({
   return (
     <DropdownNavbarItem
       {...props}
-      href="#"
       mobile={mobile}
       label={
         <span>