Fix addition of assigned roles list

[digot007]

Fixing addition of the lists. List could return a single item and added @() to handle such cases

Description

If the single item is returned instead of the list, addition of the assignedScopes will not work. Using @() to handle such cases.

Checklist

• [Yes] I have read the Submitting Changes section of CONTRIBUTING.md
• [Yes] The title of the PR is clear and informative
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• [Yes] The PR does not introduce breaking changes
• [Yes] If applicable, the changes made in the PR have proper test coverage
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