DNA infusion book Can't be used for Codex Cicatrix Ritual despite being a book

[MonkestationIssueBot]

Reporting client info: Client Information:
BYOND:515.1647
Key:fmgiv

Round ID:

8798

Testmerges:

• Security Vouchers + Security Balance/QoL Pass + Random Head Overlay Bug Fix
• Spleens
• What makes me a good demoman?
• Sabo borg and more medical tools for assault operatives
• [DNM] Aneri except I redid the branch again
• Replay subsystem fixes + optimizations
• Heliostation from fulp
• AWAKEN THE DRAGON!
• [DNM] Icon and filter optimization stuff
• Fixes the shipbreaker conveyors on theseus
• Domain expansion, CATastrophe!
• Port various UX improvements from tg
• [DNM] Smooth Movement 5: You Can (Not) Move
• [BOUNTY] Port Skyrat's feature to be able to play the character we want in a ghost role (using character loadouts

Reproduction:

See Title. Should work due to being a book, but it doesn't for some reason.

[Absolucy]

infusion book is /obj/item/infuser_book, so this is an issue with the book not being a book subtype, rather than any issue with the ritual