[FLINK-26564] Fix the bug that CompactCoordinatorStateHandler doesn't properly handle the cleanup-in-progress requests.

[pltbkd]

What is the purpose of the change

This pull request fixes the bug that CompactCoordinatorStateHandler doesn't properly handle the cleanup-in-progress requests.

Brief change log

• Check with a CompactTrigger if a remaining committable should be compacted or passed through, while CompactCoordinatorStateHandler handling the state.

Verifying this change

This change added tests and can be verified with CompactCoordinatorTest#testStateHandler.

Does this pull request potentially affect one of the following parts:

• Dependencies (does it add or upgrade a dependency): no
• The public API, i.e., is any changed class annotated with @Public(Evolving): no
• The serializers: no
• The runtime per-record code paths (performance sensitive): no
• Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Kubernetes/Yarn, ZooKeeper: no
• The S3 file system connector: no

Documentation

• Does this pull request introduce a new feature? no
• If yes, how is the feature documented? not applicable

[flinkbot]

CI report:

• ec989af Azure: SUCCESS

Bot commands

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• @flinkbot run azure re-run the last Azure build

[gaoyunhaii]

Thanks @pltbkd for the fix! LGTM

[gaoyunhaii]

@flinkbot run azure