Summary: Fixes T8118. Turns out this also was broken in the main view if e.g. you went to just /conpherence/. The fix is to make sure the threadmanager js class explicitly manages subscriptions as the loaded thread changes.
Test Plan:
- from /conpherence/ was able to receive messages in real time.
- from /conpherence/ changed threads and still received messages in real time
- from durable column switched threads and received messages in real time
Reviewers: epriestley
Reviewed By: epriestley
Subscribers: Korvin, epriestley
Maniphest Tasks: T8118
Differential Revision: https://secure.phabricator.com/D12758
524aee03dc