Feat: Enables the message operator form to reference the data defined by the begin operator #3221 (#8108)

### What problem does this PR solve?

Feat: Enables the message operator form to reference the data defined by
the begin operator #3221

### Type of change


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

web/src/pages/agent/context.ts

@@ -1,6 +1,6 @@
 import { RAGFlowNodeType } from '@/interfaces/database/flow';
 import { createContext } from 'react';
 
-export const FlowFormContext = createContext<RAGFlowNodeType | undefined>(
+export const AgentFormContext = createContext<RAGFlowNodeType | undefined>(
   undefined,
 );