Digital Railway Market Size, Share, and COVID-19 Impact Analysis, By Offering (Solution (Remote Monitoring, Route Optimization and Scheduling, Analytics, Network Management, Predictive Maintenance, Security), Service (Managed Services, Professional Services, Consulting , System Integration and Deployment, Support and Maintenance)), By Application (Railway Operation Management (Rail Automatic Management, Rail Control, Signaling Solution, Rail Traffic Management, Freight Management, Smart Ticketing), Asset Management, Passenger Experience), and Regional Forecast, 2026-2034