[Test failure] TC_INSTRUCTOR_6: issue adding Group Community TA on the course with no divided discussions

[GlugovGrGlib]

Release

Redwood

Expected behavior

When adding a community TA to a course without cohorts and divided discussions enabled through the membership tab in the instructor dashboard, the Instructor should see an error, and the user shouldn't be assigned with role community TA.

Actual behavior

The error is displayed as expected, however:

1. User isn't shown in the community TA section in Membership, but it's seen in the discussions that user has Community TA status.

2. The user is added as Community TA to discussions

3. It isn't possible to revoke access until the divided discussions functionality is enabled for a course.

Steps to reproduce

• Setup discussions in the course without enabling Divide discussions by cohorts option
• Try to add user as Community TA on the Membership tab in the Instructor dashboard
• Check discussions post by the assigned user

Additional information

After the Cohorts are enabled for the course and Divide discussions by cohorts option is enabled in discussions, the user appears in the list of Community TA