fix: always assign the admin role to the default admin

[micbar]

Description

Bugfix: Update the admin user role assignment to enforce the config

The admin user role assigment was not updated after the first assignment. We now read the assigned role during init and update the admin user ID accordingly if the role is not assigned.
This is especially needed when the OCIS_ADMIN_USER_ID is set after the autoprovisioning of the admin user when it originates from an external Identity Provider.

Related Issue

• Fixes OCIS_ADMIN_USER_ID is not updated when a role is already present #8902

Motivation and Context

How Has This Been Tested?

• manually
• unit tests

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Technical debt
• Tests only (no source changes)

Checklist:

• Code changes
• Unit tests added
• Acceptance tests added
• Documentation ticket raised:

[update-docs]

Thanks for opening this pull request! The maintainers of this repository would appreciate it if you would create a changelog item based on your changes.

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
76.3% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[micbar]

waiting for @rhafer s feedback