Release v4.6.0

Added

• Native chart control rendered by Chart.js. It accepts the stable string types, the numeric values 0 to 7 and the Pascal case names of the earlier .NET chart type, shows an explicit empty state instead of a blank canvas, reports an unsupported type or a chart that cannot be drawn, and redraws only when its type, data or options change in content. Hosts that render charts must install chart.js. (#62)
• Native multiStateCheckbox control that cycles through every authored state, keeps option values of any JSON type, follows value and options edits, announces its state without claiming to be checked, supports readOnly, and is themed with the PrimeReact checkbox tokens. State icons are PrimeIcons class names or qualified icon references. (#62)
• json property value type for free-form configuration such as chart data, validated without being reshaped. (#62)
• Descriptors for both controls, listing the legacy numeric chart types as choices so migrated values stay valid. (#62)