New API, using polling task ID to obtain accurate progress

### Feature Idea

When we use the Comfyui API, WS cannot accurately return progress, just like the Comfyui page ([rgthread-Comfy](https://github.com/rgthree/rgthree-comfy) node)

### Existing Solutions

I used a rudimentary level of code to modify and implement similar effects in executors. py and servers. py (it seems that the results are not very accurate, please correct me)
[add CF progress API.zip](https://github.com/user-attachments/files/16925997/add.CF.progress.API.zip)
After covering, use [http://127.0.0.1:8188/api/node_status](http://127.0.0.1:8188/api/node_status) Can be viewed (continuously polling)

### Other

I hope to have direct support in Comfyui, thank you

Start by reviewing the proposed changes in executors.py and servers.py, then compare them with the existing WebSocket progress behavior and the /api/node_status polling endpoint. The issue is complete when ComfyUI directly supports obtaining accurate progress through a task ID, with the API behavior and accuracy requirements clarified and verified.

Written by the indexing model from the issue text.