Global Self-Heating Instant Hot Pot Market Size, Share & Demand Report By Product Type (Up to 200 ml, 200–500 ml, Above 500 ml, Premium Branded Hot Pots), By Heating Technology (Chemical Heater Packs, Steam-Based, Phase-Change, Electric/Hybrid), By Packaging Format (Retort Pouch Bowls, Metal Cans, Rigid Trays, Multi-Compartment Bowls), By Application (Household, On-the-Go, Outdoor & Travel, Military & Emergency), By Distribution Channel (Online Retail, Supermarkets, Convenience Stores, Specialty Stores, Institutional Procurement), By Region & Segment Forecasts, 2025–2030