[FLINK-33741]Expose Rocksdb Histogram statistics in Flink metrics

[zhougit86]

What is the purpose of the change

expose histogram metrics in rocksdb native metrics

Brief change log

exposed the histogram metrics

Verifying this change

This change is already covered by existing tests, such as RocksDBNativeMetricMonitorTest

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? (docs)