Backfill - update database to fill in UserMediaUploads where possible

[BradHN1]

User Story.
As a superadmin (or admin)
I want be able to select from all media that have been uploaded
So that I can fix stuff that needs to be fixed.

Additional details/context
Add any other details, context, UI mockups, examples from other products, or anything else that might help the developers know what to make.

Value added.
What do you think the value of adding this feature is? Help managers and developers know how this should be prioritized.

Acceptance criteria.
The conditions that must be met for this to be done. For example, for a login feature: User is securely and reliably logged in until timeout or manual sign-out.