Good job I have installer for version 22.10. In an ideal world etc. etc. etc. ...
A screwup with the release of any new software version is always possible. Such a not unlikely eventuality should be catered by routinely providing the offline installer for the immediately previous version. To do otherwise is irresponsible. Is Avast worried about losing face?
Avast One appears not to have an offline installer. This is not an encouragement to use Avast One.
Ultimately, I am to blame for my own neglect to secure a copy of the 22.11 offline installer. I will be more careful in future.