squash!: Check for instance type instead of namespace string, remove trying to parse libv2 keys as its no longer required

Author: rodmgwgu

common/djangoapps/student/roles.py

@@ -13,11 +13,10 @@
 from django.contrib.auth.models import User  # lint-amnesty, pylint: disable=imported-auth-user
 from common.djangoapps.student.signals.signals import emit_course_access_role_added, emit_course_access_role_removed
 from opaque_keys.edx.django.models import CourseKeyField
-from opaque_keys import InvalidKeyError
 from opaque_keys.edx.keys import CourseKey
-from opaque_keys.edx.locator import CourseLocator, LibraryLocatorV2
+from opaque_keys.edx.locator import CourseLocator
 from openedx_authz.api import users as authz_api
-from openedx_authz.api.data import RoleAssignmentData
+from openedx_authz.api.data import RoleAssignmentData, CourseOverviewData
 from openedx_authz.constants import roles as authz_roles
 
 from common.djangoapps.student.models import CourseAccessRole
@@ -81,17 +80,17 @@ def authz_get_all_course_assignments_for_user(user: User) -> list[RoleAssignment
     """
     assignments = authz_api.get_user_role_assignments(user_external_key=user.username)
     # filter courses only
-    filtered_assignments = [assignment for assignment in assignments if assignment.scope.NAMESPACE == 'course-v1']
+    filtered_assignments = [
+        assignment for assignment in assignments
+        if isinstance(assignment.scope, CourseOverviewData)
+    ]
     return filtered_assignments
 
 def get_org_from_key(key: str) -> str:
     """
     Get the org from a course or library key.
     """
-    try:
-        parsed_key = CourseKey.from_string(key)
-    except InvalidKeyError:
-        parsed_key = LibraryLocatorV2.from_string(key)
+    parsed_key = CourseKey.from_string(key)
     return parsed_key.org
 
 def register_access_role(cls):