Global Minimalist Window System Market Size, Share & Demand Report By Product Type (Sliding Minimalist Window Systems, Fixed Minimalist Window Systems, Casement Minimalist Window Systems, Tilt & Turn Window Systems, Bi-fold Minimalist Window Systems), By Application (Residential, Commercial, Institutional), By Installation Type (New Construction, Retrofit / Replacement), By Material (Aluminum, uPVC, Steel, Composite), By Region & Segment Forecasts, 2026–2031