[FLINK-30624][runtime] Introduce a new HeapPriorityQueue for StatusWatermarkValve to avoid affecting the performance of memory state backend.

[wanglijie95]

What is the purpose of the change

Fix the performance regression described in FLINK-30624.

before this fix:
Benchmark                                  (stateBackend)   Mode  Cnt     Score    Error   Units
MemoryStateBackendBenchmark.stateBackends          MEMORY  thrpt   30  3936.158 ± 65.696  ops/ms
MemoryStateBackendBenchmark.stateBackends              FS  thrpt   30  3963.934 ± 64.942  ops/ms
MemoryStateBackendBenchmark.stateBackends        FS_ASYNC  thrpt   30  3930.955 ± 68.809  ops/ms`

after this fix:
Benchmark                                  (stateBackend)   Mode  Cnt     Score    Error   Units
MemoryStateBackendBenchmark.stateBackends          MEMORY  thrpt   30  4151.066 ± 80.526  ops/ms
MemoryStateBackendBenchmark.stateBackends              FS  thrpt   30  4143.619 ± 65.212  ops/ms
MemoryStateBackendBenchmark.stateBackends        FS_ASYNC  thrpt   30  4161.912 ± 44.701  ops/ms

Verifying this change

This change is already covered by existing tests

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:

• f23b992 Azure: SUCCESS

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[wanglijie95]

@flinkbot run azure

[zhuzhurk]

LGTM.

[wanglijie95]

@flinkbot run azure