Global Fairtrade Chocolate Market Size, Share & Demand Report By Product Type (Dark Chocolate, Milk Chocolate, White Chocolate, Flavored/Specialty Chocolate), By Application (Retail/Household Consumption, Foodservice, Industrial), By Distribution Channel (Supermarkets & Hypermarkets, Online Retail, Specialty Stores, Convenience Stores), By Certification Type (Fairtrade International, Fairtrade + Organic), By Region & Segment Forecasts, 2026–2031