[Bug] SparkEngineUi:[Stop kyuubi engine: (Stop Immediately) (Stop Gracefully)] It didn't work

[promising-forever]

Code of Conduct

• I agree to follow this project's Code of Conduct

Search before asking

• I have searched in the issues and found no similar issues.

Describe the bug

Click (Stop Immediately) (Stop Gracefully) on the spark engine ui, and it does trigger
/kyuubi/stop or /kyuubi/gracefulstop, but the engine does not exit as expected;
The code implementation of EngineTab class falls back to 1.8.0 with no problem

Affects Version(s)

1.9.1

Kyuubi Server Log Output

No response

Kyuubi Engine Log Output

No response

Kyuubi Server Configurations

No response

Kyuubi Engine Configurations

No response

Additional context

No response

Are you willing to submit PR?

• Yes. I would be willing to submit a PR with guidance from the Kyuubi community to fix.
• No. I cannot submit a PR at this time.

[github-actions]

Hello @promising-forever,
Thanks for finding the time to report the issue!
We really appreciate the community's efforts to improve Apache Kyuubi.