Limited Staff should not have studio read access by design.
However, since many LMS views depend on the `has_course_author_access` check and `course_author_access_required`
decorator, we have to allow write access until the permissions become more granular. For example, there should
be STUDIO_VIEW_COHORTS and STUDIO_EDIT_COHORTS specifically for the cohorts endpoint, which is used to display
"Cohorts" instructor dashboard tab.
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