🧵 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/components/structures/TimelinePanel.tsx

@@ -1683,7 +1683,7 @@ class TimelinePanel extends React.Component<IProps, IState> {
         is very tied to the main room timeline, we are forcing the timeline to
         send read receipts for threaded events */
         const isThreadTimeline = this.context.timelineRenderingType === TimelineRenderingType.Thread;
-        if (SettingsStore.getValue("feature_thread") && isThreadTimeline) {
+        if (SettingsStore.getValue("feature_threadstable") && isThreadTimeline) {
             return 0;
         }
         const index = this.state.events.findIndex((ev) => ev.getId() === evId);