Cellulosic Man-made Fiber Market Size & Forecasts 2026-2035, By Segments (Application, End-Use Industry, Sustainability Attributes, Fiber Type), Growth Opportunities, Innovation Landscape, Regulatory Shifts, Strategic Regional Insights (U.S., Japan, China, South Korea, UK, Germany, France), and Competitive Dynamics (Aditya Birla Group, Lenzing AG, Sateri, Grasim Industries, Tangshan Sanyou)