If I add a custom sfSymbol to my asset catalog in the Xcode project, it can be referenced normally in the native project, by name. It also works in libraries such as react-native-sfsymbols. However in the Native Stack "unstable_headerLeftItems", only the built-in sfSymbols work. Is there any way to get the custom symbols to display?:

unstable_headerLeftItems: () => [ { type: 'button', icon: { type: 'sfSymbol', name: 'custom.drawer', }, onPress: () => navigation.openDrawer(), } ]