Source tree-view expands 2 directories instead of 1

### Describe the bug

- Got to https://npmx.dev/package-code/ky/v/1.14.3/distribution%2Ftypes%2Fcommon.d.ts
- Collapse `core/`
- Try expanding `types/`

Expected: `types/` is expanded

Actual: both `types/` and `core/` are expanded

https://github.com/user-attachments/assets/b27cb3f9-9356-44e3-8156-7533a5629d42

### Additional context

_No response_

### Logs

```shell-script

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