如何使自定义结构类型符合@SceneStorage 包装器？

Question

自定义结构类型的变量应该用

@SceneStorage

存储，但它显示编译器错误：

struct MyView {
    struct MyData: Identifiable, Codable {
        var id: String
    
        init(id: String) {
            self.id = id
        }
    
        private enum CodingKeys: String, CodingKey {
            case id
        }
        
        init(from decoder: Decoder) throws {
            let container = try decoder.container(keyedBy: CodingKeys.self)
            id = try container.decode(String.self, forKey: .id)
        }
    }

    @SceneStorage var data: [MyData] = [] // Compiler error: "No exact matches in call to initializer"
}

另外符合

RawRepresentable

并不能解决错误：

struct MyView {
    ...

    typealias RawValue = String

    init?(rawValue: String) {
        guard
            let data = rawValue.data(using: .utf8),
            let result = try? JSONDecoder().decode(MyData.self, from: data)
        else {
            return nil
        }
        self = result
    }

    public var rawValue: String {
        guard
            let data = try? JSONEncoder().encode(self),
            let result = String(data: data, encoding: .utf8)
        else {
            return "[]"
        }
        return result
    }
}

为什么这会显示编译器错误？