Stadium Seating Market Size & Forecasts 2026-2035, By Segments (Material, Seating Style, Application, Capacity, Design), Growth Opportunities, Innovation Landscape, Regulatory Shifts, Strategic Regional Insights (U.S., Japan, China, South Korea, UK, Germany, France), and Competitive Dynamics (Ferco Seating, Irwin Seating Company, Hussey Seating Company, Schelde Sports, Camatic Seating)