Shared flash props

Inertia.share("appName", "Kona")
Inertia.share(mapOf("flash" to "ok"))

class HandleInertia : HandleInertiaRequests() {
    override fun share(request: Request) = mapOf("path" to request.path)
}

router.get("/x") {
    Inertia.render("Pages/X", mapOf("local" to true, "flash" to "override"))
}

Resulting props: appName=Kona, path=/x, local=true, flash=override (local wins).