Feat: Merge splitter and hierarchicalMerger into one node #9869 (#10543)

### What problem does this PR solve?

Feat: Merge splitter and hierarchicalMerger into one node #9869

### Type of change


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

web/src/pages/data-flow/canvas/node/splitter-node.tsx

@@ -1 +1,52 @@
-export { RagNode as SplitterNode } from './index';
+import { IRagNode } from '@/interfaces/database/flow';
+import { NodeProps, Position } from '@xyflow/react';
+import { PropsWithChildren, memo } from 'react';
+import { NodeHandleId, Operator } from '../../constant';
+import OperatorIcon from '../../operator-icon';
+import { LabelCard } from './card';
+import { CommonHandle } from './handle';
+import { LeftHandleStyle, RightHandleStyle } from './handle-icon';
+import NodeHeader from './node-header';
+import { NodeWrapper } from './node-wrapper';
+import { ToolBar } from './toolbar';
+
+type RagNodeProps = NodeProps<IRagNode> & PropsWithChildren;
+function InnerSplitterNode({
+  id,
+  data,
+  isConnectable = true,
+  selected,
+}: RagNodeProps) {
+  return (
+    <ToolBar selected={selected} id={id} label={data.label} showCopy={false}>
+      <NodeWrapper selected={selected}>
+        <CommonHandle
+          id={NodeHandleId.End}
+          type="target"
+          position={Position.Left}
+          isConnectable={isConnectable}
+          style={LeftHandleStyle}
+          nodeId={id}
+        ></CommonHandle>
+        <CommonHandle
+          type="source"
+          position={Position.Right}
+          isConnectable={isConnectable}
+          id={NodeHandleId.Start}
+          style={RightHandleStyle}
+          nodeId={id}
+          isConnectableEnd={false}
+        ></CommonHandle>
+        <NodeHeader
+          id={id}
+          name={'Chunker'}
+          label={data.label}
+          icon={<OperatorIcon name={Operator.Splitter}></OperatorIcon>}
+        ></NodeHeader>
+        <LabelCard>{data.name}</LabelCard>
+      </NodeWrapper>
+    </ToolBar>
+  );
+}
+
+export const SplitterNode = memo(InnerSplitterNode);