Extra placeholder user validation
What does this MR do and why?
Extra placeholder user validation
This MR helps to ensure that the placeholder user creator never creates
a User
record which will fail to save due to validation errors.
Related issue: #455365 (closed)
MR acceptance checklist
Please evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.
How to set up and validate locally
This work is behind a WIP feature flag, with no meaningful way to test. However, I'm comfortable that the test coverage should validate the changes.