bug: the leading slash in a path is stripped

### Checks

- [x] I have searched [github.com/aws/amazon-q-developer-cli/issues](https://github.com/aws/amazon-q-developer-cli/issues?q=) and there are no duplicates of my issue
- [x] I have run `q doctor` in the affected terminal session
- [x] I have run `q restart` and replicated the issue again

### Operating system

Linux

### Expected behaviour

Q prompts "Where do you want to write that file?"
I reply: "/tmp/"
Q creates the file in "/tmp/"

### Actual behaviour

Q prompts "Where do you want to write that file?"
I reply: "/tmp/"
Q creates the file in "$(pwd)/tmp/"

### Steps to reproduce

_No response_

### Environment

```yaml

```