operator-port-result folder consuming too much space

### What happened?

The operator-port-result folder is very large.

### How to reproduce?

As a developer, I typically run a workflow, modify some code, restart the texera, create a new workflow, and then repeat the process.

It seems we can reproduce the issue by running a workflow, retesting the texera, and repeating the process multiple times.

### Version

1.1.0-incubating (Pre-release/Master)

### Commit Hash (Optional)

_No response_

### What browsers are you seeing the problem on?

_No response_

### Relevant log output

```shell

```

### Code of Conduct

- [x] I agree to follow Apache Code of Conduct

Start by reproducing the workflow, retest, restart, and repeat cycle described in the issue, then inspect how the operator-port-result folder is created and retained. Identify what causes its size to grow and define completion as preventing unbounded accumulation without breaking workflow execution; no source file or test is named, so repository exploration is required.

Written by the indexing model from the issue text.