gRPC: Able to run a query for a service that was removed from the configuration #17537

What is the expected behaviour?

The query should not be executable once the associated gRPC service has been removed from the configuration. An appropriate error should be displayed indicating that the service is no longer available/configured.

What is the current behaviour?

The query can still be executed even though the associated gRPC service has been removed from the configuration.

How to reproduce the issue?

1. Log in with valid credentials
2. Navigate to the data source page
3. Configure a gRPC service.
4. Create an app and create a query for the service.
5. Remove the service from the configuration.
6. Try to run the existing query.
7. Observe that the query still executes successfully.

Screenshots or Screencast

https://jam.dev/c/c05b72fb-b4a8-4055-845d-60a4898db5a9