Automotive Tailgate Market Size, Share Demand Report By Product Type (Manual Tailgate, Power Tailgate, Hands-Free Smart Tailgate), By Material Type (Steel Tailgate, Aluminum Tailgate, Composite Tailgate), By Vehicle Type (Passenger Cars, Sport Utility Vehicles, Pickup Trucks, Electric Vehicles), By Sales Channel (OEM, Aftermarket) By Region & Segment Forecasts, 2025–2034