Ability to align annual evidence renewals to a single review date

Allow admins to define a single annual review date per framework for annual evidence renewals. Instead of calculating renewal dates based on each piece of evidence’s last upload date, all annual evidence could become due at a configurable interval before the review date (e.g., 1 month).

This would prevent evidence renewal dates from being scattered across several weeks and make it easier to prepare for internal and external audits in one planned review cycle.