Helicopter Engine Market Size & Forecasts 2026-2035, By Segments (Helicopter Class, Fuel Type, Product Type, Application, Power Output), Growth Opportunities, Innovation Landscape, Regulatory Shifts, Strategic Regional Insights (U.S., Japan, China, South Korea, UK, Germany, France), and Competitive Dynamics (Safran Helicopter Engines, GE Aviation, Pratt & Whitney Canada, Rolls-Royce, Honeywell Aerospace)