Electric Wall Heater Market Size, Share, and Industry Analysis By Product Type (Convection Heaters, Radiant Heaters, Fan-Forced Heaters, Ceramic Heaters, and Infrared Quartz Heaters), By Power Rating (Low Power (< 1 kW), Medium Power (1 kW - 3 kW), and High Power (3 kW)), By Mounting Type (Wall-Mounted and Surface-Mounted), By Application (Residential, Commercial, and Industrial), and Regional Forecast, 2026-2034