Cellular Blinds & Shades Market Size & Forecasts 2026-2035, By Segments (Type, Fabric, Technology, Installation, Distribution channel, Application), Growth Opportunities, Innovation Landscape, Regulatory Shifts, Strategic Regional Insights (U.S., Japan, China, South Korea, UK, Germany, France), and Competitive Dynamics (Hunter Douglas, Levolor, Graber, Bali, 3 Day Blinds)