iOS26 - How to mark a text message as SPAM if it did NOT go to "Unknown Senders" and did not go to the SPAM folder.

I have an extremely obvious SPAM text message that showed up with all my normal "in contacts" folder. Yes, I have whatever setting is needed such that only numbers in my contacts appear in the "known" senders area. But, for whatever reason it's just too hard for an iPhone to understand that a number ISN'T in my contacts. Anyway, there's no option (that I can find) to tell the iPhone 17 that this is SPAM. Shocking. I know.