🐛 Search server doesn't support newer search categories

[WinterSolstice8]

I affirm:

• I understand that if I do not agree to the following points by completing the checkboxes my issue will be ignored.
• I have read and understood the Contributing Guide and the Code of Conduct.
• I have searched existing issues to see if the issue has already been opened, and I have checked the commit log to see if the issue has been resolved since my server was last updated.

OS / platform the server is running (if known)

N/A

Branch affected by issue

base

Steps to reproduce

Anything newer than and including Unity search is not supported and causes weird logging when searching for it on xi_search

Expected behavior

Handle these cases and either report a non-implemented status or correctly implement them.