Initializes an icon from encoded PNG fallback data, optional UTF-8 SVG data, and optional high-density PNG data. The high-density PNG provides a reliable DPI-aware representation for native backends whose SVG decoder is unavailable.
public NativeWebViewContextMenuIcon(ReadOnlySpan<byte> pngData, ReadOnlySpan<byte> svgData, ReadOnlySpan<byte> highDensityPngData)