Global Domestic Air Humidifier Market Size, Share Demand Report By Product Type (Ultrasonic Humidifiers, Warm-Mist/Steam Humidifiers, Hybrid/Combination Humidifiers, Smart/IoT-Enabled Humidifiers), By Application (Residential, Healthcare, Commercial, Specialized Applications), By Distribution Channel (Online Retail, Specialty Stores, Department Stores, D2C, Wholesale), By Region & Segment Forecasts, 2025–2030