[Merged by Bors] - lakehouse demo: Don't fail on Kafka data loss

[sbernauer]

Description

Not really a good thing, but reduces broken demos as we currently don't restart Spark if the k8s nodes have maintenance.

Review Checklist

• [ ] Code contains useful comments
• [ ] (Integration-)Test cases added (or not applicable)
• [ ] Documentation added (or not applicable)
• [ ] Changelog updated (or not applicable)
• [ ] Cargo.toml only contains references to git tags (not specific commits or branches)

Once the review is done, comment bors r+ (or bors merge) to merge. Further information

[sbernauer]

bors r+

[bors[bot]]

Pull request successfully merged into main.

Build succeeded:

• clippy