fix: (feedback) pass email from request.user instead of LTI user

lms/djangoapps/lti_provider/users.py

@@ -41,7 +41,7 @@ def authenticate_lti_user(request, lti_user_id, lti_consumer):
             # Verify that the email from the LTI Launch and the logged-in user are the same
             # before linking the LtiUser with the edx_user.
             if request.user.is_authenticated and request.user.email.lower() == lis_email.lower():
-                lti_user = create_lti_user(lti_user_id, lti_consumer, lis_email)
+                lti_user = create_lti_user(lti_user_id, lti_consumer, request.user.email)
             else:
                 # Ask the user to login before linking.
                 raise PermissionDenied() from exc