Refrigerated Ice Cream Merchandise Market Size & Forecasts 2026-2035, By Segments (Distribution Channel, Refrigerant Type, Capacity, Price Range, End Use, Type), Growth Opportunities, Innovation Landscape, Regulatory Shifts, Strategic Regional Insights (U.S., Japan, China, South Korea, UK, Germany, France), and Competitive Dynamics (Nestlé, Unilever, Mondelez, Mars, Kraft Heinz)