Request to make StringResource/ResourceFormattedStringDesc serialization compatible #816

I am trying to implement a custom kotlinx.serialization serializer for the ResourceFormattedStringDesc to be able to pass it as navigation argument. This can be implemented relatively easy for Android/JVM platforms. But for JS i've faced an issue that the key parameter for the StringResource is private so i can't read it in reliable way

JS target

actual class StringResource(
    private val key: String,
    val loader: RemoteJsStringLoader
)

The approach with asDynamic() works but the field name is changed during compilation to key_1 and i can't be sure it is the stable name.

private val StringResource.keyUnsafe: String get() = this.asDynamic().key_1 as String

So the request is to make the key field public for the JS target so i can read it and serialize without hacks.

Additionally would be nice to make public stringRes and args fields for the JVM target also to avoid using reflection

JVM target

actual data class ResourceFormattedStringDesc actual constructor(
    private val stringRes: StringResource,
    private val args: List<Any>
) : StringDesc