chore(examples): only use bundle

examples/nextjs/pages/UseUpdateNodeInternals/CustomNode.tsx

@@ -1,5 +1,5 @@
 import React, { memo, FC, useMemo, CSSProperties } from 'react';
-import { Handle, Position, NodeProps } from '@react-flow/core';
+import { Handle, Position, NodeProps } from '@react-flow/bundle';
 
 const nodeStyles: CSSProperties = { padding: 10, border: '1px solid #ddd' };
 
@@ -11,7 +11,7 @@ const CustomNode: FC<NodeProps> = ({ data }) => {
         return (
           <Handle
             key={handleId}
-            type='source'
+            type="source"
             position={Position.Right}
             id={handleId}
             style={{ top: 10 * i + data.handlePosition * 10 }}
@@ -23,7 +23,7 @@ const CustomNode: FC<NodeProps> = ({ data }) => {
 
   return (
     <div style={nodeStyles}>
-      <Handle type='target' position={Position.Left} />
+      <Handle type="target" position={Position.Left} />
       <div>output handle count: {data.handleCount}</div>
       {handles}
     </div>