The text of the bill is here: https://ilga.gov/Legislation/BillStatus/FullText?GAID=18&Doc.... There's about 3.5 pages of text defining this.
The relevant text doesn't call it an "algorithmic feed" for what it's worth. They define an "addictive" feed and it's essentially any kind of personalized recommendation.
> "Addictive feed" means a website, online service, online application, or mobile application, or a portion thereof, in which multiple pieces of media generated or shared by users of a website, online service, online application, or mobile application, either concurrently or sequentially, are recommended, selected, or prioritized for display to a user based, in whole or in part, on information associated with the user or the user's device, unless any of the following conditions are met.
It seems that it mostly bans behavior-based personalization that is opaque to the user. It seems to allow for several types of personalization where the user has agency.