Instructor Dashboard - group_configurations Endpoint Missing From /api/instructor/v2/ Path

[brianjbuck-wgu]

Summary

After PR #37976 merged, frontend-app-authoring receives a 404 when calling GET /api/instructor/v2/courses/{course_id}/group_configurations.

GroupConfigurationsListView was registered only under the cohorts API at /api/cohorts/v2/courses/{course_id}/group_configurations. No URL mapping
existed in lms/djangoapps/instructor/views/api_urls.py v2_api_urls for this endpoint, even though the original feature commit described the endpoint as living at the instructor v2 path.

Steps to Reproduce

1. Load a course in the instructor dashboard MFE (frontend-app-authoring)
2. Observe a 404 Not Found on GET /api/instructor/v2/courses/{course_id}/group_configurations

Fix

Register GroupConfigurationsListView in v2_api_urls in lms/djangoapps/instructor/views/api_urls.py at the pattern courses/{course_id}/group_configurations, consistent with the existing courses/ prefix convention used throughout v2_api_urls.

[brianjbuck-wgu]

Fixed with FE workaround