Mutation - batchUpdateActionsDates

Update multiple actions with distinct start and end dates in one request. Access: Requires user access to all actions. Dates locked with lockDates are skipped unless the caller is a workspace admin or project owner. Set shouldTriggerAutoScheduling to false to write the requested dates without shifting dependency-linked actions. This does not disable project actionDateSync: non-recurring parents with active subactions derive their dates from those children and ignore direct parent date writes, while subaction updates may recompute parent and ancestor date ranges.