Integrate searching public rooms and people into the new search experience (#8707)

* Implement searching for public rooms and users in new search experience
* Implement loading indicator for spotlight results
* Moved spotlight dialog into own subfolder
* Extract search result avatar into separate component
* Build generic new dropdown menu component
* Build new network menu based on new network dropdown component
* Switch roomdirectory to use new network dropdown
* Replace old networkdropdown with new networkdropdown
* Added component for public room result details
* Extract hooks and subcomponents from SpotlightDialog
* Create new hook to get profile info based for an mxid
* Add hook to automatically re-request search results
* Add hook to prevent out-of-order search results
* Extract member sort algorithm from InviteDialog
* Keep sorting for non-room results stable
* Sort people suggestions using sort algorithm from InviteDialog
* Add copy/copied tooltip for invite link option in spotlight
* Clamp length of topic for public room results
* Add unit test for useDebouncedSearch
* Add unit test for useProfileInfo
* Create cypress test cases for spotlight dialog
* Add test for useLatestResult to prevent out-of-order results

cypress/integration/5-threads/threads.spec.ts

@@ -28,9 +28,10 @@ describe("Threads", () => {
     let synapse: SynapseInstance;
 
     beforeEach(() => {
+        // Default threads to ON for this spec
+        cy.enableLabsFeature("feature_thread");
         cy.window().then(win => {
             win.localStorage.setItem("mx_lhs_size", "0"); // Collapse left panel for these tests
-            win.localStorage.setItem("mx_labs_feature_feature_thread", "true"); // Default threads to ON for this spec
         });
         cy.startSynapse("default").then(data => {
             synapse = data;