(Remote Schema) Introspection descriptions only available for admin role

### Version Information

Server Version:v2.17.0-cloud.1
CLI Version (for CLI related issue):

### Environment

Cloud

### What is the current behaviour?

When viewing Docs, or running introspections queries with a role that is not admin, I am unable to see the description for queries, mutations, types, etc.

### What is the expected behaviour?

I would like to be able to see the description within the schema introspection as a role other than admin

### How to reproduce the issue?

1. Run following query in against a hasura cloud instance with a role other than admin:
{
__schema {
types {
name
description
}
}
}

### Screenshots or Screencast


### Keywords
introspection
admin

Reproduce the issue on a Hasura Cloud instance using a non-admin role and the provided __schema query. Compare the introspection response and Docs behavior with an admin role, then trace the remote-schema introspection authorization path. Done means schema descriptions for queries, mutations, and types are visible to permitted non-admin roles without exposing unrelated information.

Written by the indexing model from the issue text.