Summary:
Fixes T12378. Two minor issues here:
- CAN_INTERACT on tasks uses "USER", but should just use the view policy, which may be more permissive ("PUBLIC").
- CAN_INTERACT is currently prevented from being "PUBLIC" by additional safeguards. Define an explicit capability object for the permission which returns `true` from `shouldAllowPublicPolicySetting()`.
Test Plan:
- Viewed an unlocked task as a logged-out user, saw "login to comment" instead of "locked".
- Viewed a locked task as a logged-out user, saw "locked".
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T12378
Differential Revision: https://secure.phabricator.com/D17485
d0c648dfa5