`snapcraft clean --destructive` does not delete `.craft` directory
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Issue body
### Check existing issues
- [x] I've verified that this bug isn't described by any existing issues.
### Bug description
After `snapcraft pack` is run in destructive mode, running `snapcraft clean --destructive` removes all expected directories except for `.craft`.
### Steps to reproduce
```
root@snapcraft-test:~# cd `mktemp -d`
root@snapcraft-test:/tmp/tmp.9TIyHpcaEM# snapcraft init
See https://documentation.ubuntu.com/snapcraft/stable/reference/project-file for reference information about the snapcraft.yaml format.
Successfully initialised project.
root@snapcraft-test:/tmp/tmp.9TIyHpcaEM# ls -a
. .. snap
root@snapcraft-test:/tmp/tmp.9TIyHpcaEM# snapcraft pack --destructive
Packed my-project_0.1_amd64.snap
root@snapcraft-test:/tmp/tmp.9TIyHpcaEM# ls -a
. .. .craft my-project_0.1_amd64.snap overlay parts prime snap stage
root@snapcraft-test:/tmp/tmp.9TIyHpcaEM# snapcraft clean --destructive
root@snapcraft-test:/tmp/tmp.9TIyHpcaEM# ls -a
. .. .craft my-project_0.1_amd64.snap snap
```
### Environment
Snapcraft 8.13.2 on Ubuntu 24.04 in an LXD container
### snapcraft.yaml
```yaml
```
### Log output
```shell
```
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