[SPARK-52667] Improve SparkAppReconciler to show app names during cleaning up

[dongjoon-hyun]

What changes were proposed in this pull request?

This PR aims to improve SparkAppReconciler to show app names during cleaning up.

Why are the changes needed?

BEFORE

The log message doesn't provide any specific information.

25/07/03 05:54:22 INFO SparkAppReconciler: Cleaning up resources for SparkApp.
25/07/03 05:54:22 INFO SparkAppReconciler: Cleanup completed
25/07/03 05:54:22 INFO SparkAppReconciler: Cleaning up resources for SparkApp.
25/07/03 05:54:22 INFO SparkAppReconciler: Cleanup completed

AFTER

It provides a concise and specific information.

25/07/03 06:06:57 INFO SparkAppReconciler: Cleaning up resources for SparkApp:pi
25/07/03 06:07:02 INFO SparkAppReconciler: Cleaning up resources for SparkApp:pi-java21

Does this PR introduce any user-facing change?

No behavior change. This is only changing log message information.

How was this patch tested?

Manual build, install, test, and check logs.

Was this patch authored or co-authored using generative AI tooling?

No.

[dongjoon-hyun]

Thank you, @viirya !
Merged to main.