feat: implement org retrieval for user roles in authz compatibility layer

[BryanttV]

Closes: #38032

Description

This PR adds the functionality for _authz_get_orgs_for_user method in the authz compatibility layer.

Related PRs

We need to merge this first:

• feat: add api function for get user role assignments filtered openedx-authz#240

Testing Instructions

1. Enable authz for course authoring using the waffle flag (authz.enable_course_authoring)

2. Go to Studio > Your Course > Settings > Course Team > + New Team Member and add a new member as Staff

3. Now, check the orgs list:

   from common.djangoapps.student.roles import CourseStaffRole
   from opaque_keys.edx.keys import CourseKey
   
   course_key = CourseKey.from_string("course-v1:Axim+Your+Course")
   user = User.objects.get(username="jeff")
   
   CourseStaffRole(course_key).get_orgs_for_user(user)  # ["Axim"]

Deadline

Verawood

[openedx-webhooks]

Thanks for the pull request, @BryanttV!

This repository is currently maintained by @openedx/wg-maintenance-openedx-platform.

Once you've gone through the following steps feel free to tag them in a comment and let them know that your changes are ready for engineering review.

🔘 Get product approval

If you haven't already, check this list to see if your contribution needs to go through the product review process.

• If it does, you'll need to submit a product proposal for your contribution, and have it reviewed by the Product Working Group.
  • This process (including the steps you'll need to take) is documented here.
• If it doesn't, simply proceed with the next step.

🔘 Provide context

To help your reviewers and other members of the community understand the purpose and larger context of your changes, feel free to add as much of the following information to the PR description as you can:

• Dependencies

  This PR must be merged before / after / at the same time as ...

• Blockers

  This PR is waiting for OEP-1234 to be accepted.

• Timeline information

  This PR must be merged by XX date because ...

• Partner information

  This is for a course on edx.org.

• Supporting documentation
• Relevant Open edX discussion forum threads

🔘 Get a green build

If one or more checks are failing, continue working on your changes until this is no longer the case and your build turns green.

Details

---

Where can I find more information?

If you'd like to get more details on all aspects of the review process for open source pull requests (OSPRs), check out the following resources:

• Overview of Review Process for Community Contributions
• Pull Request Status Guide
• Making changes to your pull request

When can I expect my changes to be merged?

Our goal is to get community contributions seen and reviewed as efficiently as possible.

However, the amount of time that it takes to review and merge a PR can vary significantly based on factors such as:

• The size and impact of the changes that it introduces
• The need for product review
• Maintenance status of the parent repository

💡 As a result it may take up to several weeks or months to complete a review and merge your PR.

[rodmgwgu]

I have one doubt about the desired functionality for this function.

My first impression was that this function should return the list of org-wide assignations.

However on further inspection, I see that the old code doesn't make a distinction between CourseAccessRoles with or without course_id, and according to the docstring at CourseAccessRole definiton, org-wide assignations are the ones that have course_id as None.

So just to confirm that we are all on the same understanding, this function (legacy version or new one), returns all Orgs to which the user has at least access to one course, right?

[BryanttV]

Yes, both _legacy_get_orgs_for_user and _authz_get_orgs_for_user return all orgs where the user has at least one assignment with that role.