Success Plans Modify Date updated when CTA or Timeline associated is updated

It would be great for the modified date on the Success Plan to be based on max date of a timeline entry or CTA modification.

We are trying to encourage CSMs to update the CTAs and Timeline entries to help us track how often they are interacting with the plan. Right now, the modify date only updates when you close the plan, which is not a true reflection of how often a CSM is interacting with the plan.