Playground should load the proto definition linked in the API Entity

[OrkoHunter]

We have an API entity in the Catalog where the proto file is linked.

apiVersion: backstage.io/v1alpha1
kind: API
metadata:
  name: jokes-service-grpc-api
  description: gRPC API for Jokes Service
spec:
  type: grpc
  lifecycle: staging
  system: sdtk-jokes-service
  owner: sdtk_usergroup
  definition:

    $text: https://github.com/datarobot/service-registry/tree/main/services/jokes-service/dr_protobuf/jokes/service/v1/jokes.proto

When we open the definition of that API, this playground shows up. However it asks the user to upload the proto file again.

Is this the expected behavior? Ideally the playground for the particular API should load with the proto definitions already attached in the API entity. That would be the ideally user experience.

@fr0stf0x @whatvn Curious what your thoughts are on this. Also do share what would it take to build this feature, we can try to contribute. 🙏