SetErrorPresenter receives fresh r.Context(), not modified from server middleware

### What happened?
The method `SetErrorPresenter` seems to be receiving a fresh context, a la the following code snippet:

```
if err := recover(); err != nil {
err := s.exec.PresentRecoveredError(r.Context(), err)
resp := &graphql.Response{Errors: []*gqlerror.Error{err}}
b, _ := json.Marshal(resp)
w.WriteHeader(http.StatusUnprocessableEntity)
w.Write(b)
}
```

https://github.com/99designs/gqlgen/blob/master/graphql/handler/server.go#L103-L108

However, we are mutating the context in our web middleware, and want to receive that mutated context. This is needed because we extract/inject data to align headers with context (i.e. present a unique request ID to the context, and other metadata).

### What did you expect?
The incoming context in `SetErrorPresenter` to contain the metadata from the middleware.

### Minimal graphql.schema and models to reproduce
Modify `ctx` in web middleware, compare to incoming `ctx` in `SetErrorPresenter`.

### versions
- `go run github.com/99designs/gqlgen version`? `v0.17.1`
- `go version`? `go version go1.18.1 darwin/amd64`

该 issue 位于 graphql/handler/server.go 的第 103-108 行，其中 r.Context() 被传递给 PresentRecoveredError。context 应该是经过 server middleware 修改后的 context。查看 handler 在此之前如何处理 requests，以确定 middleware 在哪里修改了 context。检查 server 的 ServeHTTP 方法以及任何 context 传播过程。应添加一个 test，以验证 error presenter 接收到的是修改后的 context。

由索引模型根据 Issue 内容生成。