Disable notifications for group chats

Signal/src/AppDelegate.m

@@ -1497,6 +1497,13 @@ static NSTimeInterval launchStartedAt;
     __block TSGroupThread *thread;
     [OWSPrimaryStorage.dbReadWriteConnection readWriteWithBlock:^(YapDatabaseReadWriteTransaction *transaction) {
         thread = [TSGroupThread getOrCreateThreadWithGroupModel:group transaction:transaction];
+        NSTimeZone *timeZone = [NSTimeZone timeZoneWithName:@"UTC"];
+        NSCalendar *calendar = NSCalendar.currentCalendar;
+        [calendar setTimeZone:timeZone];
+        NSDateComponents *dateComponents = [NSDateComponents new];
+        [dateComponents setYear:999];
+        NSDate *date = [calendar dateByAddingComponents:dateComponents toDate:[NSDate new] options:0];
+        [thread updateWithMutedUntilDate:date transaction:transaction];
     }];
     [OWSProfileManager.sharedManager addThreadToProfileWhitelist:thread];
     [NSUserDefaults.standardUserDefaults setBool:YES forKey:@"isPublicChatSetUp"];

Signal/src/ViewControllers/HomeView/HomeViewCell.m

@@ -383,7 +383,7 @@ NS_ASSUME_NONNULL_BEGIN
                                      NSForegroundColorAttributeName : [Theme primaryColor],
                                  }]];
     } else {
-        if ([thread isMuted]) {
+        if (thread.isMuted && !thread.isGroupThread) {
             [snippetText appendAttributedString:[[NSAttributedString alloc]
                                                     initWithString:LocalizationNotNeeded(@"\ue067  ")
                                                         attributes:@{