Power automation flows

I have sharepoit oniline site with power automation flows integrated. This site is constructed by other person. These flows are available for read-only site visitors. But in power automation web interface these users are not asigned to site flows. It means in web interface these users are not configured as co-owner or run-only-users. Also - lists and libraries of this site are not configured as co-owners of flows.

Please explain me:

How can flows be available for user who is not shown in web interface settings of these flows?