Powertrain-as-a-Platform Market Size, Share, and Industry Analysis By Platform Type (Internal Combustion Engine (ICE) Powertrain Platforms, Hybrid Powertrain Platforms, Battery Electric Powertrain Platforms, and Fuel Cell Powertrain Platforms)) and Others), By Vehicle Type (Hatchback & Sedan, SUV, LCV, and HCV), By Platform Architecture (Modular Platforms, Scalable Platforms, and Integrated Powertrain Platforms), By Propulsion Type (ICE and EV), and Regional Forecast, 2026-2034