Fix redirect url for prefixing the default locale (#33762)

We want to prefix the default locale to the current path (`/path`), not the current href (`http://domain.tld/path`).


## Documentation / Examples

- [x] Make sure the linting passes by running `yarn lint`


Co-authored-by: JJ Kasper <22380829+ijjk@users.noreply.github.com>

docs/advanced-features/i18n-routing.md

@@ -183,7 +183,9 @@ export function middleware(request: NextRequest) {
 
   return shouldHandleLocale
     ? NextResponse.redirect(
-        `/en${stripDefaultLocale(request.nextUrl.pathname)}`
+        `/en${stripDefaultLocale(request.nextUrl.pathname)}${
+          request.nextUrl.search
+        }`
       )
     : undefined
 }