Correct an issue with epoch timestamps in Conduit
Summary:
Fixes T11375. Some validation code was mishandling raw epoch timestamps.
For numeric values larger than 29999999 (e.g., 2999-12-25, christmas 2999), assume the value is a timestamp.
Test Plan: Used maniphest.search to query for modifiedStart, got a better result set and saw the dateModified constraint in the query.
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T11375
Differential Revision: https://secure.phabricator.com/D16326