feat: add platform-level glob scope

[BryanttV]

Resolves: #268

Description

This PR adds platform-level glob scopes so role assignments can target all resources of a type across the entire platform, not just within a single organization or specific scope.

Problem

Org-level globs (course-v1:OpenedX+*, lib:DemoX:*) grant access within one org. Some use cases need platform-wide coverage (e.g., a role on all courses everywhere) without assigning per-org globs.

Solution

• Introduce PlatformGlobData and PlatformCourseOverviewGlobData for the course-v1:* pattern (all courses on the platform).
• Split scope registration in ScopeMeta:
  • org_glob_registry: org-wide patterns (renamed from glob_registry)
  • platform_glob_registry: platform-wide patterns
• Add IS_ORG_GLOB / IS_PLATFORM_GLOB flags where IS_GLOB is derived from both.

Additional changes

• Add new registry helpers: get_all_org_glob_namespaces, get_all_platform_glob_namespaces, get_all_registered_scopes)
• PlatformCourseOverviewGlobData included in SCOPES_WITH_ADMIN_OR_SUPERUSER_CHECK |
• In scopes REST API users with a platform glob see unfiltered course/library querysets (same as full platform access)

Related Pull Requests

• feat: add platform glob scope support openedx-platform#38660

Testing Instructions

To test these changes, you can check the REST API.

1. Use the /api/authz/v1/roles/users/ endpoint to add platform-level permissions:

   {
       "users": [
           "john"
       ],
       "role": "course_admin",
       "scopes": [
           "course-v1:*"
       ]
   }

2. Validate the permissions /api/authz/v1/permissions/validate/me

   [
       {
           "action": "courses.view_course_team",
           "scope": "course-v1:OpenedX+DemoX+DemoCourse"
       },
       {
           "action": "courses.manage_course_updates",
           "scope": "course-v1:edunext+RBAC+2026"
       },
       {
           "action": "courses.manage_advanced_settings",
           "scope": "course-v1:any-org+any-course+any-run"
       }
   ]

Response

[
    {
        "action": "courses.view_course_team",
        "scope": "course-v1:OpenedX+DemoX+DemoCourse",
        "allowed": true
    },
    {
        "action": "courses.view_course_team",
        "scope": "course-v1:edunext+RBAC+2026",
        "allowed": true
    },
    {
        "action": "courses.view_course_team",
        "scope": "course-v1:any-org+any-course+any-run",
        "allowed": true
    }
]

Example scope keys

Pattern	Type	Meaning
course-v1:*	Platform glob	All courses on the platform
course-v1:OpenedX+*	Org glob	All courses in org OpenedX
course-v1:OpenedX+Demo+2026	Concrete	Single course

Merge checklist

Check off if complete or not applicable:

• Version bumped
• Changelog record added
• Documentation updated (not only docstrings)
• Fixup commits are squashed away
• Unit tests added/updated
• Manual testing instructions provided
• Noted any: Concerns, dependencies, migration issues, deadlines, tickets

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[BryanttV]

Hi everyone! This PR is ready for review, however, I have a few questions related to this PR that I'd like to resolve. @mariajgrimaldi @MaferMazu @rodmgwgu @bmtcril

1. This is how it is returned in the /assignments endpoint. Should the org property be "*" since it applies to all organizations at the course level? Or should it be left blank?, Or have some other value?

   {
       "is_superadmin": false,
       "role": "course_admin",
       "org": "*",
       "scope": "course-v1:*",
       "permission_count": 29,
       "full_name": "John Doe",
       "username": "john",
       "email": "john@doe.com"
   }

2. In the /scopes endpoint, only library-specific or course-specific scopes are returned. Should we also return org-level and/or platform-level scopes?