It does say in the screenshot above "Image_files does not use autogrowth option". And there is a simple reason for this: it is not applicable. Data and log files are that. Files. And files have a size. But the container for Filestream is a folder and a folder does not have a size per se, so there is nothing that can grow.
Of course, you can fill up the disk, but disks usually are not able to autogrow. :--)