Gigacasting Market Size, Share Demand Report By Material Type (Aluminum Gigacasting, Magnesium Alloys, Hybrid Metal Alloys), By Application (EV Structural Components, Battery Enclosures, Chassis Systems, Body-in-White Structures), By End Use (OEM Manufacturing, Contract Manufacturing), By Component Type (Front Underbody, Rear Underbody, Integrated Structural Frames) By Region & Segment Forecasts, 2025–2034