TypeExtensions.GetOpenApiReferenceId does not support generics more than 1 level deep

[Arclights]

Describe the issue
When declaring objects using generics that go more than one levels deep, the GetOpenApiReferenceId method will generate the same id, no matter what the inner classes are, due to the logic here.

This will result in that all the instances where the outer classes are the same, only one schema will be used in the resulting documentation.

To Reproduce
Assume that we have a common response model

class ResponseModel<T> {
   public T data {get; set;}
}

And two classes we want to respond with

class Foo {}

class Bar {}

And two functions with the following attributes

[OpenApiResponseWithBody(
        statusCode: HttpStatusCode.OK,
        contentType: MediaTypeNames.Application.Json,
        bodyType: typeof(ResponseModel<List<Foo>>)
)]

and

[OpenApiResponseWithBody(
        statusCode: HttpStatusCode.OK,
        contentType: MediaTypeNames.Application.Json,
        bodyType: typeof(ResponseModel<List<Bar>>)
)]

This will result in ResponseModel<List<Foo>> (if processed first) being used for documenting the response body of both functions

Expected behavior
ResponseModel<List<Foo>> for documenting the first function and ResponseModel<List<Bar>> for documenting the second one.