Migrate User.GetProfileByIds to sync by default (#11510)

app/slack.go

@@ -66,8 +66,8 @@ func replaceUserIds(userStore store.UserStore, text string) string {
 			userIds = append(userIds, match[1])
 		}
 
-		if res := <-userStore.GetProfileByIds(userIds, nil, true); res.Err == nil {
-			for _, user := range res.Data.([]*model.User) {
+		if users, err := userStore.GetProfileByIds(userIds, nil, true); err == nil {
+			for _, user := range users {
 				text = strings.Replace(text, "<@"+user.Id+">", "@"+user.Username, -1)
 			}
 		}