Keep working proof versions private from published-only reviewers

Proofing now keeps minor working versions private from reviewers assigned to see published versions only. Internal teams can continue refining a proof on the same action, while those reviewers see the latest published major version until the next major version is released. Internal annotations, activity, notifications, and files from working versions remain hidden from published-only reviewers.

Assign an external approver to a proofing round when they should review published versions without access to minor working versions.

This helps creative, brand, and review teams collaborate with external approvers while keeping work in progress private and avoiding duplicate customer actions.