addMessageRequestResponseMessage: Don't update active_at on initial sync

Co-authored-by: Scott Nonnenberg <scott@signal.org>

ts/models/conversations.ts

@@ -188,6 +188,7 @@ import { explodePromise } from '../util/explodePromise';
 import { getCallHistorySelector } from '../state/selectors/callHistory';
 import { migrateLegacyReadStatus } from '../messages/migrateLegacyReadStatus';
 import { migrateLegacySendAttributes } from '../messages/migrateLegacySendAttributes';
+import { getIsInitialSync } from '../services/contactSync';
 
 /* eslint-disable more/no-then */
 window.Whisper = window.Whisper || {};
@@ -2344,7 +2345,7 @@ export class ConversationModel extends window.Backbone
       ourAci: window.textsecure.storage.user.getCheckedAci(),
       forceSave: true,
     });
-    if (!this.get('active_at')) {
+    if (!getIsInitialSync() && !this.get('active_at')) {
       this.set({ active_at: Date.now() });
       await DataWriter.updateConversation(this.attributes);
     }

ts/services/contactSync.ts

@@ -32,6 +32,9 @@ export function setIsInitialSync(newValue: boolean): void {
   log.info(`setIsInitialSync(${newValue})`);
   isInitialSync = newValue;
 }
+export function getIsInitialSync(): boolean {
+  return isInitialSync;
+}
 
 async function updateConversationFromContactSync(
   conversation: ConversationModel,