Bug: The fohm complementary reports are not being sent out with the mutant upload

[karlnyr]

Describe the bug

When the changes were made to the FOHM file delivery on hasta to be handled by the MutantUploadAPI we forgot to add the email message. I don't know if the email message was deemed as not an upload, but if not we would have to change the logic altogether or make a discrepancy in the mutant upload to allow for the email to be sent.

To Reproduce
Steps to reproduce the behavior:

1. Run cg upload auto --workflow mutant
2. See that no report file email is sent out

Expected behavior

FOHM expects there to be an email, sent out by this function, in tandem with the upload.

Additional context
Add any other context about the problem here.