feature request: do not truncate the 'cause' value on errors

It truncates the error cause lines

```js
// app.js
require('source-map-support').install();
throw new Error('test 123', { cause: new Error('foo') })
```

### current behavior


### expected behavior


note that it's truncating the last lines

#### version

- package: `0.5.21`
- nodejs: 22

---

that's because the line bellow won't display the cause as it doesn't belongs to the stack trace:

https://github.com/evanw/node-source-map-support/blob/7b5b81eb14c9ee6c6537398262bf7dab8580621c/source-map-support.js#L499