Automotive Door Impact Bar Market Size, Share Demand Report By Material Type (High-Strength Steel, Aluminum Alloys, Composite Materials), By Vehicle Type (Passenger Vehicles, Commercial Vehicles, Electric Vehicles), By Sales Channel (OEM, Aftermarket), By Design Type (Tubular Impact Bars, Reinforced Beam Structures, Hydroformed Impact Bars), By Region & Segment Forecasts, 2025–2034