Feat: Add a child operator node by clicking the operator node anchor point #3221 (#8309)

### What problem does this PR solve?

Feat: Add a child operator node by clicking the operator node anchor
point #3221

### Type of change


- [x] New Feature (non-breaking change which adds functionality)

web/src/pages/agent/canvas/node/categorize-node.tsx

@@ -24,6 +24,7 @@ export function InnerCategorizeNode({
           position={Position.Left}
           isConnectable
           id={'a'}
+          nodeId={id}
         ></CommonHandle>
 
         <NodeHeader id={id} name={data.name} label={data.label}></NodeHeader>
@@ -45,6 +46,7 @@ export function InnerCategorizeNode({
                   position={Position.Right}
                   isConnectable
                   style={{ ...RightHandleStyle, top: position.top }}
+                  nodeId={id}
                 ></CommonHandle>
               </div>
             );