🐛使用cdn方式 复制当前页数据,偶发process报错

### 🏷 S2 Version / S2 版本

s2@2.7.2.min.js

### 💻 Sheet Type / 表格类型

- [ ] PivotSheet
- [x] TableSheet
- [ ] PivotChartSheet
- [ ] GridAnalysisSheet
- [ ] StrategySheet
- [ ] EditableSheet

### 🖋 Describe the bug / 问题描述

//报错
Uncaught ReferenceError: process is not defined
at o (s2@2.7.2.min.js:63:107001)

### ⌨️ Code Snapshots / 代码片段

```typescript
//调用
copyToClipboard(data, true);

```

### 🔗 Reproduction link / 复现链接

_No response_

### 📋 Steps to Reproduce the Bug or Issue / 重现步骤

大数据量的列表复制偶发问题

### 😊 Expected Behavior / 期望行为

修复

### 😅 Current Behavior / 当前行为

_No response_

### 💻 OS / 操作系统

- [ ] macOS
- [ ] Windows
- [ ] Linux
- [ ] Others / 其他

### 🌏 Browser / 浏览器

- [ ] Chrome
- [ ] Edge
- [ ] Firefox
- [ ] Safari (Limited support / 有限支持)
- [ ] IE (Nonsupport / 不支持)
- [ ] Others / 其他

### 🪓 Check that you have performed the following steps / 请确认你已完成以下自查

- [ ] 我已经主动搜索过问题列表 (I have actively searched the Issues list)
- [ ] 我已经主动搜索过讨论区 (I have actively searched the Discussions list)
- [ ] 我已经仔细阅读过官方文档 (I have read the Official Document)
- [ ] 我确认这是一个 BUG，而不是如何使用的问题 (I confirm this is a BUG, not a usage question)
- [ ] 我已经提供了有效的复现链接或严格的操作步骤 (I have provided a valid reproduction link or strict descriptive steps)

Start at the copyToClipboard(data, true) call and reproduce the intermittent failure with a large TableSheet dataset using the CDN build s2@2.7.2.min.js. Trace the generated bundle around s2@2.7.2.min.js:63:107001, then verify that copying large lists through the CDN no longer raises "process is not defined".

Written by the indexing model from the issue text.