`global` Reference Error in Browser Environment

When using `randombytes@2.1.0` in a browser environment with Vite as the build tool, the following error occurs:

```bash
Uncaught ReferenceError: global is not defined
```

This error stems from the browser.js implementation attempting to access the `global` object which is not available in browser DOM environments:

```javascript
var Buffer = require('safe-buffer').Buffer
var crypto = global.crypto || global.msCrypto
```

As the source code mentioned below `crypto` is defined correctly

https://github.com/browserify/randombytes/blob/b4eb4126fccc503e375853ca7b3e96aaa34af9e6/browser.js#L15-L16

从链接的实现中的 browser.js 开始，在使用 Vite 构建的浏览器环境中使用 randombytes@2.1.0 重现该故障。跟踪浏览器端的 crypto 初始化，并验证构建不再引发 "global is not defined"，同时仍能访问浏览器的 crypto 实现。

由索引模型根据 Issue 内容生成。