🥰 [FEATURE] 期望提供http【数据处理函数】编辑入口

### 💻 Features description [Please make everyone to understand it]
我打算处理一下坐标异常的数据，现在想编辑一下 http 数据集配置中的数据处理函数，有编辑入口吗？
### 🏞 What problem does this feature solve
新增之后 就没有入口对函数进行编辑了，或者说直接编辑JSON文件？
### 🧐 What does the proposed API look like

Start by reviewing the existing HTTP dataset configuration flow and the attached screenshot to locate how data-processing functions are created. Determine the appropriate edit entry or JSON-editing workflow, including how coordinate corrections should be saved. Done means users can reliably edit an HTTP dataset's data-processing function after creation.

Written by the indexing model from the issue text.