[Redesign] Use status icons in Maniphest task list

Summary: Ref T8099, Fixes T8339. This lets us pull in the status icon and display in lists and object headers.

Test Plan: Look at a list of open and closed tasks, see icons match state (duplicate, spite, defaults).

Reviewers: epriestley, btrahan

Reviewed By: btrahan

Subscribers: epriestley, Korvin

Maniphest Tasks: T8099, T8339

Differential Revision: https://secure.phabricator.com/D13490