[FEATURE] Support for obtaining the batchArgs of batch objects through restapi

### Code of Conduct

- [X] I agree to follow this project's [Code of Conduct](https://www.apache.org/foundation/policies/conduct)

### Search before asking

- [X] I have searched in the [issues](https://github.com/apache/kyuubi/issues?q=is%3Aissue) and found no similar issues.

### Describe the feature

Now getting the rest object batch through restapi does not contain batchArgs, some times it is useful, it may contain the batch job result sink location，It is necessary information to proceed to the next action.

### Motivation

now

### Describe the solution

_No response_

### Additional context

_No response_

### Are you willing to submit PR?

- [X] Yes. I would be willing to submit a PR with guidance from the Kyuubi community to improve.
- [ ] No. I cannot submit a PR at this time.

No file, test, or entry point is named. Start by locating the REST API representation of batch objects and how batchArgs is currently handled, then trace the response path. Done means the REST response exposes batchArgs and focused coverage verifies it.

Written by the indexing model from the issue text.