feat: watch graph change (#1092)

### What problem does this PR solve?

feat: watch graph change #918 

### Type of change

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

web/src/pages/flow/mock.tsx

@@ -1,11 +1,5 @@
-import { MergeCellsOutlined, RocketOutlined } from '@ant-design/icons';
 import { Position } from 'reactflow';
 
-export const componentList = [
-  { name: 'Retrieval', icon: <RocketOutlined />, description: '' },
-  { name: 'Generate', icon: <MergeCellsOutlined />, description: '' },
-];
-
 export const initialNodes = [
   {
     sourcePosition: Position.Left,