Plastic Rigid IBC Market Size & Forecasts 2026-2035, By Segments (Material, Category, End Use), Growth Opportunities, Innovation Landscape, Regulatory Shifts, Strategic Regional Insights (U.S., Japan, China, South Korea, UK, Germany, France), and Competitive Dynamics (Plastipak Packaging, Greif Inc., Mauser Group, Zarges, Schütz GmbH & Co. KGaA)