🧵 Enable threads by default (#9736)

* Delabs threads

* remove threads reload when labs is toggled

* Fix ts strict

* fix rebase mistake

* remove .only

* fix pr comments

* re-introduce backwards compat

* Fix export test

* Fix SearchREsultTile test

* strict ts

src/MatrixClientPeg.ts

@@ -233,7 +233,7 @@ class MatrixClientPegClass implements IMatrixClientPeg {
         opts.pendingEventOrdering = PendingEventOrdering.Detached;
         opts.lazyLoadMembers = true;
         opts.clientWellKnownPollPeriod = 2 * 60 * 60; // 2 hours
-        opts.experimentalThreadSupport = SettingsStore.getValue("feature_thread");
+        opts.experimentalThreadSupport = SettingsStore.getValue("feature_threadstable");
 
         if (SettingsStore.getValue("feature_sliding_sync")) {
             const proxyUrl = SettingsStore.getValue("feature_sliding_sync_proxy_url");