[Bug]: Importing Kafka Consumer gives wrong pipelinePath

### Apache Hop version?

2.9.0

### Java version?

11.0.15

### Operating system

Windows

### What happened?

When importing a Pentaho/kettle Kafka Consumer step, the Hop transform has the pipelinePath without the file extension (.hpl). This gives an error when clicking on the Kafka Consumer transform and trying to open the "Open: Kafka Pipeline":
```
HopException:
Unable to load pipeline [{0}] : can't find directory

The pipeline path file:///C:/Users/xxxx/IdeaProjects/mhc-data-extractor/Hop/Projects/mhcde/wfpl/yyy/yyPhase1KafkaSub is invalid, and will not run successfully.
```
When I add the file extension (.hpl), the error doesn't show up and clicking on it opens the Kafka Pipeline

### Issue Priority

Priority: 3

### Issue Component

Component: Import

Reproduce the import of a Pentaho/Kettle Kafka Consumer step on Windows and inspect the resulting pipelinePath. Compare the imported path with the referenced .hpl file, then verify that the Kafka Pipeline opens successfully without manually adding the extension.

Written by the indexing model from the issue text.