fix: Fix republishing volumes after a Node restart

[siegfriedweber]

Description

Fix the error "failed to write content: File exists (os error 17)" after a Node restart.

Fixes #262

Definition of Done Checklist

• Not all of these items are applicable to all PRs, the author should update this template to only leave the boxes in that are relevant
• Please make sure all these things are done and tick the boxes

# Author
- [x] Changes are OpenShift compatible
- [x] Helm chart can be installed and deployed operator works
- [x] Integration tests passed (for non trivial changes)
- [x] Changes need to be "offline" compatible

# Reviewer
- [ ] Code contains useful comments
- [ ] Code contains useful logging statements
- [ ] (Integration-)Test cases added
- [ ] Documentation added or updated. Follows the [style guide](https://docs.stackable.tech/home/nightly/contributor/docs/style-guide).
- [ ] Changelog updated
- [ ] Cargo.toml only contains references to git tags (not specific commits or branches)

# Acceptance
- [ ] Feature Tracker has been updated
- [ ] Proper release label has been added
- [ ] [Roadmap](https://github.com/orgs/stackabletech/projects/25/views/1) has been updated

[lfrancke]

Can you please add a release note snippet in the form "Previously, 'this went wrong'. With this release, 'this was fixed in the following way'."

[siegfriedweber]

Can you please add a release note snippet in the form "Previously, 'this went wrong'. With this release, 'this was fixed in the following way'."

Already done in #262, see https://docs.stackable.tech/home/stable/release-notes/#_bug_fixes.