Don't run integrity checks when unlinked

ts/background.ts

@@ -1324,7 +1324,7 @@ export async function startApp(): Promise<void> {
   });
 
   window.Whisper.events.on('unlinkAndDisconnect', () => {
-    void unlinkAndDisconnect();
+    drop(unlinkAndDisconnect());
   });
 
   window.Whisper.events.on('httpResponse499', () => {
@@ -2928,6 +2928,14 @@ export async function startApp(): Promise<void> {
         conversation.unset('senderKeyInfo');
       });
 
+      // We use username for integrity check
+      const ourConversation =
+        window.ConversationController.getOurConversation();
+      if (ourConversation) {
+        ourConversation.unset('username');
+        window.Signal.Data.updateConversation(ourConversation.attributes);
+      }
+
       // Then make sure outstanding conversation saves are flushed
       await window.Signal.Data.flushUpdateConversationBatcher();
 

ts/services/usernameIntegrity.ts

@@ -4,6 +4,7 @@
 import pTimeout from 'p-timeout';
 
 import * as Errors from '../types/errors';
+import { isDone as isRegistrationDone } from '../util/registration';
 import { getConversation } from '../util/getConversation';
 import { MINUTE, DAY } from '../util/durations';
 import { drop } from '../util/drop';
@@ -69,6 +70,10 @@ class UsernameIntegrityService {
   }
 
   private async check(): Promise<void> {
+    if (!isRegistrationDone()) {
+      return;
+    }
+
     await this.checkUsername();
     await this.checkPhoneNumberSharing();
   }