Lps 52223

here's my changes to the CHannelHubManagerImpl to make confirmation cluster aware

we will also need to backport these changes to 6.1 and then make sure that the plugins are updated to use the new confirmClusterDelivery method.

the portalCompat hook (via the portal-compat-shared folder) will need to be updated to make the plugins usable with and without this fix... you can look at the commit for making "sendNotificaitonEvent" cluster aware for an example.