👑 [需求]自定义连线

### 🥰 需求描述

flowEditor
自定义连线需要修改 onConnect 的参数，现在的封装```
updateEdgesOnConnection: (connection) => {
const { source, target, sourceHandle, targetHandle } = connection;

if (!source || !target) return;

const edgeId = generateEdgeId(source, target, sourceHandle, targetHandle);

const edge: Edge = {
id: edgeId,
source: source,
target: target,
sourceHandle,
targetHandle,
};
// 这里无法扩展 edge 的 type
get().dispatchEdges({ type: 'addEdge', edge });

return edge;
},```

### 🧐 解决方案

现在只能在 onConnect 里增加 type，手动 addEdge，然后在 afterConnect 里移除你们增加的
addEdge 的传参是不是可以交还给开发者

### 🚑 其他信息

Start by reading flowEditor’s updateEdgesOnConnection implementation and the onConnect/afterConnect path shown in the issue. Confirm that custom edge data such as type can be passed through the connection flow without requiring a manual addEdge call or cleanup in afterConnect.

Written by the indexing model from the issue text.