Fix user_added websocket event and update websocket channel access cache on add/remove member.

api/web_hub.go

@@ -30,11 +30,15 @@ func PublishAndForget(message *model.Message) {
 	}()
 }
 
+func UpdateChannelAccessCache(teamId, userId, channelId string) {
+	if nh, ok := hub.teamHubs[teamId]; ok {
+		nh.UpdateChannelAccessCache(userId, channelId)
+	}
+}
+
 func UpdateChannelAccessCacheAndForget(teamId, userId, channelId string) {
 	go func() {
-		if nh, ok := hub.teamHubs[teamId]; ok {
-			nh.UpdateChannelAccessCache(userId, channelId)
-		}
+		UpdateChannelAccessCache(teamId, userId, channelId)
 	}()
 }