Commercial Aircraft Gas Turbine Engine Market Size & Forecasts 2026-2035, By Segments (Engine Type, Application, Engine Configuration, Fuel Type), Growth Opportunities, Innovation Landscape, Regulatory Shifts, Strategic Regional Insights (U.S., Japan, China, South Korea, UK, Germany, France), and Competitive Dynamics (CFM International, General Electric, Rolls-Royce, Pratt & Whitney, Safran)