View all tasks without a due date

Originally part of Overview of tasks without due dates.

It would be useful to view all tasks without a due date in one place. Currently, undated tasks only appear in the Inbox if they don't have a List — which means dated-but-listed tasks have no overview view.

Workaround: add tasks to a List with the view settings Unassigned Items First and Display items without a date and time first. Real ask: give the Inbox the same View options as Lists, so users don't have to maintain a synthetic list for this.