Request race when auto-save mode is enabled

If the auto-save mode is enabled, an HTTP request to save the flow is sent after almost every action. This request includes all activity metadata. If the flow is large, such a request may take considerable time to complete, and the final version of the flow will depend not on the latest changes made, but on which save request finishes last. It might be worth considering implementing some kind of task scheduler or something like that.

https://github.com/user-attachments/assets/819a86d2-5ab6-4487-83c3-458200589195