[AAE-5139] User name style and Discovery service initialization fix (#7010)

* [AAE-5139] User name style fix and Discovery serice fixed

* * fixed unit test

* * fixed test and us latest js-api events

* * tests fixed

* * update js api

* * fixed test and lint

lib/core/mock/search.service.mock.ts

@@ -62,5 +62,6 @@ export let searchMockApi = {
     },
     isEcmLoggedIn() {
         return false;
-    }
+    },
+    reply: () => ''
 };