Expert guidance on SymbolPicker, a native SwiftUI SF Symbol picker. Use when developers mention: (1) SymbolPicker, (2) selecting SF Symbols, (3) picking symbols with colors, (4) customizing symbol picker appearance, (5) cross-platform symbol selection (iOS, macOS, visionOS), (6) specific modifiers like .symbolPickerSymbolsStyle or .symbolPickerDismiss.