Feat: Synchronize the data of the tavily form to the canvas node #3221 (#8377)

### What problem does this PR solve?

Feat: Synchronize the data of the tavily form to the canvas node #3221

### Type of change


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

web/src/pages/agent/store.ts

@@ -75,6 +75,7 @@ export type RFState = {
   generateNodeName: (name: string) => string;
   setClickedNodeId: (id?: string) => void;
   setClickedToolId: (id?: string) => void;
+  findUpstreamNodeById: (id?: string | null) => RAGFlowNodeType | undefined;
 };
 
 // this is our useStore hook that we can use in our components to get parts of the store and call actions
@@ -471,6 +472,11 @@ const useGraphStore = create<RFState>()(
       setClickedToolId: (id?: string) => {
         set({ clickedToolId: id });
       },
+      findUpstreamNodeById: (id) => {
+        const { edges, getNode } = get();
+        const edge = edges.find((x) => x.target === id);
+        return getNode(edge?.source);
+      },
     })),
     { name: 'graph', trace: true },
   ),