Packaged Bread Market Size, Share & Industry Analysis, By Product Type (Loaf Bread, Buns & Rolls, Flatbreads, Breakfast & Individual Bread Formats, and Others), By Grain Base (Wheat, Rye, Oat, Multigrain, and Others), By Fermentation (Conventional Yeast-Leavened Bread, Sourdough/Fermented-Culture Bread, Chemically Leavened Bread, Unleavened Bread, and Others), By Gluten Status (Gluten-Containing and Gluten-Free), By Distribution Channel (B2B and B2C), and Regional Forecast, 2026-2034