* move setLang() to a root layout

* fix: findLang only returns acceptable languages
* fix: fallback to use header x-lang if we haven't setLang yet
* fix: languageSchema, allow uppercase

Approved-by: Linus Flood

app/[lang]/(live)/(public)/hotelreservation/(standard)/alternative-hotels/page.tsx

@@ -2,7 +2,6 @@ import { Suspense } from "react"
 
 import SelectHotel from "@/components/HotelReservation/SelectHotel"
 import { SelectHotelSkeleton } from "@/components/HotelReservation/SelectHotel/SelectHotelSkeleton"
-import { setLang } from "@/i18n/serverContext"
 
 import type { AlternativeHotelsSearchParams } from "@/types/components/hotelReservation/selectHotel/selectHotelSearchParams"
 import type { LangParams, PageArgs } from "@/types/params"
@@ -11,8 +10,6 @@ export default async function AlternativeHotelsPage({
   params,
   searchParams,
 }: PageArgs<LangParams, AlternativeHotelsSearchParams>) {
-  setLang(params.lang)
-
   const roomKey = Object.keys(searchParams)
     .filter((key) => key.startsWith("room["))
     .map((key) => searchParams[key])