Conpherence - tweak global upload + durable conpherence interaction
Summary:
Ref T7539. This stuff is pretty whack - the "dragEnter" and "dragLeave" fire over and over and over despite not moving the mouse sometimes from JX.Mask interaction, causing that neat flickering effect. Fix this mess by disabling pointer events for the mask.
Test Plan: dragged a file to the durable column textarea. it uploaded and inlined the Fxxx into the message. tried uploading a few times and it worked repeatedly.
Reviewers: epriestley, chad
Reviewed By: epriestley
Subscribers: Korvin, epriestley
Maniphest Tasks: T7539
Differential Revision: https://secure.phabricator.com/D12058