[FIX] Auto hide room from sidebar on close (#13824)

[FIX] Auto hide Livechat room from sidebar on close

app/livechat/server/lib/Livechat.js

@@ -314,6 +314,9 @@ export const Livechat = {
 			groupable: false,
 		};
 
+		// Retreive the closed room
+		room = Rooms.findOneByIdOrName(room._id);
+
 		sendMessage(user, message, room);
 
 		if (room.servedBy) {

imports/message-read-receipt/server/hooks.js

@@ -9,8 +9,10 @@ callbacks.add('afterSaveMessage', (message, room) => {
 		return message;
 	}
 
-	// set subscription as read right after message was sent
-	Subscriptions.setAsReadByRoomIdAndUserId(room._id, message.u._id);
+	if (room && !room.closedAt) {
+		// set subscription as read right after message was sent
+		Subscriptions.setAsReadByRoomIdAndUserId(room._id, message.u._id);
+	}
 
 	// mark message as read as well
 	ReadReceipt.markMessageAsReadBySender(message, room._id, message.u._id);