[Redesign] Fix Spaces Policy Dialog

Summary: Ref T8099, Missed this when testing Spaces. Adds proper list formatting.

Test Plan: Review Policy when object is higher or lower than default.

Reviewers: btrahan, epriestley

Reviewed By: epriestley

Subscribers: epriestley, Korvin

Maniphest Tasks: T8099

Differential Revision: https://secure.phabricator.com/D13478