Where is Ventura screen saver on disk?

Ok... I can see the lovely new "Ventura" screen saver in System Settings > Screen Saver

But...

There's no Ventura.saver in /System/Library/Screen Savers (where all the others are stored)

And when I run the following to list all the Screensavers on the system:

tell application "System Events" to set allScreensavers to name of every screen saver

the output is:

{"Random", "Word of the Day", "Arabesque", "Hello", 
"Flurry", "Monterey", "Drift", "Shell", "Album Artwork", 
"FloatingMessage"}

so, again, they're all there except "Ventura".

I also tried a file search for Ventura.saver from the top of the disk, and still nothing.

Where is it?