fix: update activation email (#34136)

update account activation email message copy in body

VAN-1800

common/djangoapps/student/views/management.py

@@ -177,7 +177,9 @@ def compose_activation_email(user, user_registration=None, route_enabled=False,
     Construct all the required params for the activation email
     through celery task
     """
+    registration_flow = True
     if user_registration is None:
+        registration_flow = False
         user_registration = Registration.objects.get(user=user)
 
     message_context = generate_activation_email_context(user, user_registration)
@@ -187,6 +189,7 @@ def compose_activation_email(user, user_registration=None, route_enabled=False,
         'routed_user': user.username,
         'routed_user_email': user.email,
         'routed_profile_name': profile_name,
+        'registration_flow': registration_flow,
     })
 
     if route_enabled:

openedx/core/djangoapps/user_authn/tests/test_tasks.py

@@ -42,6 +42,7 @@ def test_ComposeEmail(self):
         assert self.msg.context['routed_user'] == self.student.username
         assert self.msg.context['routed_user_email'] == self.student.email
         assert self.msg.context['routed_profile_name'] == ''
+        assert self.msg.context['registration_flow'] is True
 
     @mock.patch('time.sleep', mock.Mock(return_value=None))
     @mock.patch('openedx.core.djangoapps.user_authn.tasks.log')