Global Luxury Invitation Market Size, Share & Demand Report By Product Type (Wedding Invitations, Corporate Invitations, Social Event Invitations, Digital Luxury Invitations), By Application (Personal Events, Corporate Events, Social Gatherings, Emerging Digital Applications), By Distribution Channel (Online Platforms, Boutique Stores, Wedding Planners/Event Agencies, Luxury Stationery Stores), By End-User (Individual Consumers, Corporate Clients, Event Management Companies, Wedding Planners), By Region & Segment Forecasts, 2026–2031