Merge pull request #25771 from overleaf/kh-pass-locale-to-checkout

[web] pass locale and currency to Stripe checkout

GitOrigin-RevId: 410cde4849226a70c5a6b295554d96984f48f9fb

services/web/types/subscription/currency.ts

@@ -20,3 +20,4 @@ export const currencies = <const>{
 
 type Currency = typeof currencies
 export type CurrencyCode = keyof Currency
+export type StripeCurrencyCode = Lowercase<CurrencyCode>