Declarative Endpoint returns 404 when specifying body

[ccerbusca]

When using the declarative endpoint feature and specifying a body type using the in operator, requests to that endpoint will always return a 404 Not Found error.

Small reproducer:

import zio.*
import zio.http.codec.HttpCodec.*
import zio.http.endpoint.*
import zio.http.{ Middleware, Server }
import zio.schema.{ DeriveSchema, Schema }

object Main extends ZIOAppDefault {

  case class Test(value: String)

  given Schema[Test] = DeriveSchema.gen[Test]

  val endpoint =
    Endpoint
      .post("test")
      .in[Test]
      .out[Test]
      .implement(ZIO.succeed)

  override def run =
    Server
      .serve(endpoint.toApp @@ Middleware.debug)
      .provide(
        Server.defaultWithPort(8080)
      )

}

with the following sample request:

Expected behaviour
Sending a correct post request to the /test endpoint should return a 200 OK response

Additional context
Happens on the latest snapshot of zio-http with Scala 3.2.2