Trait Objects in handler

[open-schnick]

Hi,
i noticed that the exact same bug / question was already asked in #408 but the code doesn't seem to work (anymore?)

Expected Behavior

One can define a trait object as state and inject a concrete implementation during runtime

Actual Behavior

Calling the endpoint returns:

data of type alloc::boxed::Box<dyn crate::Trait> was not found.

Using the example below the error would be

data of type alloc::boxed::Box<dyn poem-test::api::Database> was not found.

Steps to Reproduce the Problem

1. define a trait as follows:

#[async_trait]
pub trait Database: Send + Sync + dyn_clone::DynClone {
  async fn save(&self, name: String);
}

2. define a endpoint like this:

#[oai(path = "/", method = "get")]
async fn dummy(&self,  Data(implementation): Data<&Box<dyn Database>>) {
  implementation.save("test".to_string()).await;
}

3. implementation of Database trait:

#[derive(Debug, Clone)]
pub struct DummyDatabase;

#[async_trait]
impl Database for DummyDatabase {
  async fn save(&self, name: String) -> {
    todo!()
  }
}

4. define the state in the route

let api = OpenApiService(Api, "App", "0.0.1").data(Box::new(DummyDatabase));
let app = Route::new().nest("/", api);
// Start it ...

Specifications

• Version: poem: 3.1.6
• Platform: Linux
• Subsystem: