Capacity planning - scheduled change overrides personal schedule and ignores non-working days

When a user has configured non-working days in their personal schedule they will be ignored if there is (or has ever been) a scheduled change that applies to that user

Capacity planning shows the wrong data and ignores non-working days

At a minimum when there is a scheduled change for a user we need to also check whether they have additional non-working days in their personal schedule and include them if found

Ideally we would fully reconcile any differences in working hours and working days as well