Insulated Lunch Bags Market Size, Share & Industry Analysis, By Product Form (Box/Pail-Style Lunch Bags, Tote-Style Lunch Bags, Roll-Top/Fold-Over Lunch Bags, and Backpack-Style Lunch Bags), By Thermal System (Conventional Passive Insulation and Integrated Freezable/Phase-Change Insulation), By Price Positioning (Economy, Mid-Range, and Premium), By Capacity (Compact, Standard, and Large), By Compartment Configuration (Single-Compartment, Dual-Compartment, and Multi-Compartment), By Distribution Channel (Supermarkets, Specialty Stores, and Online Retail), and Regional Forecast, 2026-2034