Amphibious Aircraft Market Size & Forecasts 2026-2035, By Segments (Aircraft Type, Application, Size by Seating Capacity, Range), Growth Opportunities, Innovation Landscape, Regulatory Shifts, Strategic Regional Insights (U.S., Japan, China, South Korea, UK, Germany, France), and Competitive Dynamics (Textron Aviation, Viking Air, ICON Aircraft, ICON A5, Harbin Aircraft Industry Group)