fix: pass lang to create booking

server/routers/booking/input.ts

@@ -1,6 +1,7 @@
 import { z } from "zod"
 
 import { ChildBedTypeEnum } from "@/constants/booking"
+import { Lang, langToApiLang } from "@/constants/languages"
 
 const signupSchema = z.discriminatedUnion("becomeMember", [
   z.object({
@@ -81,6 +82,7 @@ export const createBookingInput = z.object({
   checkOutDate: z.string(),
   rooms: roomsSchema,
   payment: paymentSchema,
+  language: z.nativeEnum(Lang).transform((val) => langToApiLang[val]),
 })
 
 export const priceChangeInput = z.object({