Fix sorting bug in ProjectDatasource

Summary:
See https://discourse.phabricator-community.org/t/typeahead-returning-only-archived-results/2220. Ref T12538.

If a user has more than 100 disabled projects matching their search term, only disabled projects will be returned in the typeahead search results.

Test Plan: Harcoded hard limit in PhabricatorTypeaheadModularDatasourceController to force truncation of search results, observed active project on top of results as expected.

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin

Maniphest Tasks: T12538

Differential Revision: https://secure.phabricator.com/D19907