Make public invoices RTL for Farsi businesses and fix invoice back-arrow direction.

Also add optional English name fields on the add-customer modal to match the API.

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/business/src/services/customerService.ts

@@ -76,6 +76,8 @@ export interface CreateCustomerPayload {
   cellNumber: string
   firstName: string
   lastName: string
+  firstNameEn?: string
+  lastNameEn?: string
   password?: string
   email?: string
 }