[FLINK-24704][table] Fix exception when the input record loses monotonicity on the sort key field of UpdatableTopNFunction

[lincoln-lil]

This pr cherry-pick FLINK-24704 & FLINK-24654 from master to release-1.14

What is the purpose of the change

Fix the exception when the input record loses monotonicity on the sort key field of UpdatableTopNFunction

Verifying this change

This change is already covered by RankHarnessTest

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)

[flinkbot]

CI report:

• 1d59aed Azure: SUCCESS

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Automated Checks

Last check on commit b76e02b (Fri Nov 05 04:28:49 UTC 2021)

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• ❓ 1. The [description] looks good.
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[JingsongLi]

+1