"NULL" Constant used for Unassigned faces not blocked

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Describe the bug

When naming a person NULL the rename works, but trying to view that persons folder results to be the unassigned faces folder.

Funnily enough the constant unassigned used by the classic photos app has the same problem

Steps To Reproduce

No response

Platform

- OS:
- Browser:
- Memories Version:
- Nextcloud Version:
- PHP Version:

Screenshots

No response

Additional context

• Any errors in the JS console?
• Any errors in the Nextcloud server logs?