Test debugging opens a separate readonly file

### Runtime

NodeJS

### Runtime version

22.13.0

### Module version

@hapi/lab@26.0.0

### Used with

Hapi

### Any other relevant information

I find myself in situations where it's very useful to debug unit tests with VSCode and placing breakpoints in the code.

* I am also using TypeScript, hence the flag `--typescript` is passed
* `--sourcemaps` are also enabled

### How can we help?

When I run the test with `--inspect` it stops in a transpiled readonly copy of the file that I can't edit. For example in the file I see all the `require()` wrapped by `__importDefault(require())`.

I tried to provide basic reproduction steps, but the problem doesn't appear.
Do you have any clues what could generate this issue in my current project?