Feat: Add AgentNode component #3221 (#8019)

### What problem does this PR solve?

Feat: Add AgentNode component #3221

### Type of change


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

web/src/pages/agent/hooks/use-form-values.ts

@@ -0,0 +1,20 @@
+import { RAGFlowNodeType } from '@/interfaces/database/flow';
+import { isEmpty } from 'lodash';
+import { useMemo } from 'react';
+
+export function useFormValues(
+  defaultValues: Record<string, any>,
+  node?: RAGFlowNodeType,
+) {
+  const values = useMemo(() => {
+    const formData = node?.data?.form;
+
+    if (isEmpty(formData)) {
+      return defaultValues;
+    }
+
+    return formData;
+  }, [defaultValues, node?.data?.form]);
+
+  return values;
+}