Screenshare on Ventura 13.2.1 update for MB Air M2 stopped working

Additional info from troubleshooting:

Yes, the screensharing box is checked on the MB Air.

In the finder window on the Mini, it shows up now with a "?" icon to the left of the MB Air advertised name. I don't believe that icon was there under 13.2.0. I think it had a laptop icon, like it does for an older Macbook Pro.

I tried changing the name the MB Air advertises to see if that would show up in the Mini finder window. Rebooted everybody, but the finder window on the Mini still shows the old name with the "?" icon.

I wonder if there's some cached credential hanging around for the MB Air when it was 13.2.0, and is now a different credential under 13.2.1 but all my other Macs won't let go of it -or- the MB AIr won't. All my other Macs have the same problem trying to get the MB Air to share its screen. And, they can all connect to the MB Air for file sharing, but not screen sharing. Most puzzling...