Do to keys and key rotation being updated, Notes now use the `nullifier_key` instead of an `address` to indicate ownership of a note. Things to update: - [ ] any Note references - [ ] adding the pattern to `common_patterns.md` -- devs need to remember that these keys can be rotated! - [ ] include an explanation / example code for how to handle key rotation slack reference: https://aztecprotocol.slack.com/archives/C049J23DN64/p1715261619302879