AttributeError: `NoneType` object has no attribute `username`

[sentry]

Sentry Issue: WAREHOUSE-PRODUCTION-2D6

AttributeError: 'NoneType' object has no attribute 'username'
(28 additional frame(s) were not displayed)
...
  File "warehouse/cache/origin/derivers.py", line 22, in wrapper_view
    return view(context, request)
  File "warehouse/metrics/views.py", line 24, in wrapper_view
    return view(context, request)
  File "warehouse/accounts/views.py", line 1456, in verify_project_role
    send_collaborator_added_email(
  File "warehouse/email/__init__.py", line 183, in wrapper
    context = fn(request, user_or_users, **kwargs)
  File "warehouse/email/__init__.py", line 751, in send_collaborator_added_email
    "submitter": submitter.username,

[JacobCoffee]

-[ RECORD 9 ]--+-------------------------------------------------------
id             | 33693179
name           | redacted
version        |
action         | invite Owner redacted
submitted_date | 2026-01-21 00:36:39.500674
submitted_by   | deleted-user

deleted-user is the issue, i think