[Feature Request] Better display of workflow running status

## What's bothering me

1. When opening multiple workflows at the same time, i if one workflow is running and you switch to another workflow tab, the node in the other workflow will also show a working status. I think many users may have already reported this, but I didn't find it in the issues.

https://github.com/user-attachments/assets/326d3aab-9b79-45f0-8292-5a0e0d801961

2. When opening multiple workflows at the same time, it's hard to find the one that is running. There is no difference between working and non-working workflows.

## My Suggestions

1. If possible, only allow the nodes in the running workflow to display the running status.
2. Add a simple marker to the workflow tab that is currently running for users to distinguish, just created a quick demo:


┆Issue is synchronized with this [Notion page](https://www.notion.so/Issue-4221-Feature-Request-Better-display-of-workflow-running-status-2186d73d36508136b14af8d93b72abf2) by [Unito](https://www.unito.io)

Start by reproducing the issue with multiple workflow tabs, then trace the frontend handling of workflow and node running status. Done means only the active workflow's nodes show a running state and the running workflow tab has a visible marker, with the behavior verified across multiple open workflows.

Written by the indexing model from the issue text.