Fixes an issue where un-enrolling a device would not send an email to a user that was assigned that device. This was because send_user_email function requires that the device passed to the send_return_thanks action have a due_date.
Fixes an issue where un-enrolling a device would not send an email to a user that was assigned that device. This was because send_user_email function requires that the device passed to the send_return_thanks action have a due_date.

PiperOrigin-RevId: 217325342

google/loaner,google/loaner,google/loaner,google/loaner,google/loaner