handle publishing to a parent a second time.

[austinkline]

One of the last TODO comments in HybridCustody. We need to handle the case where a child tries to publish to a parent multiple times.

Discussion can be found here:
https://discord.com/channels/613813861610684416/1087374662100602920/1120753477338009660

Summary:

1. We'll fail to publish the duplicate
2. Add a method for the child to revoke access
3. If possible, child revoking a parent should clear the manager. If it can't, the parent needs to do that cleanup itself.

The issue of proxy account creation maintaining the capability once republished gets resolved with capcons, I think we can tackle that prior to launching but after audit feedback looks good