unified the code style in NestedDataOperatorConversions

[AlbericByte]

unified the code style in NestedDataOperatorConversions

Description

There is some different code style in NestedDataOperatorConversions, unified it.

Fixed the bug ...

Renamed the class ...

Added a forbidden-apis entry ...

Release note

improve the code style of NestedDataOperatorConversions, to be consistent for each SqlOperatorConversion

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Key changed/added classes in this PR

• NestedDataOperatorConversions.java

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This PR has:

• been self-reviewed.
• using the concurrency checklist (Remove this item if the PR doesn't have any relation to concurrency.)
• added documentation for new or modified features or behaviors.
• a release note entry in the PR description.
• added Javadocs for most classes and all non-trivial methods. Linked related entities via Javadoc links.
• added or updated version, license, or notice information in licenses.yaml
• added comments explaining the "why" and the intent of the code wherever would not be obvious for an unfamiliar reader.
• added unit tests or modified existing tests to cover new code paths, ensuring the threshold for code coverage is met.
• added integration tests.
• been tested in a test Druid cluster.

[FrankChen021]

The failed CI has no relation to these changes.

Unit & Integration tests CI / standard-its / integration-index-tests-middleManager (batch-index)

Dockerfile:28
--------------------
  26 |     ARG ZK_VERSION
  27 |     ARG APACHE_ARCHIVE_MIRROR_HOST=https://archive.apache.org/
  28 | >>> RUN APACHE_ARCHIVE_MIRROR_HOST=${APACHE_ARCHIVE_MIRROR_HOST} /root/base-setup.sh && rm -f /root/base-setup.sh
  29 |     
  30 |     FROM druidbase
--------------------
ERROR: failed to solve: process "/bin/sh -c APACHE_ARCHIVE_MIRROR_HOST=${APACHE_ARCHIVE_MIRROR_HOST} /root/base-setup.sh && rm -f /root/base-setup.sh" did not complete successfully: exit code: 4
Error:  Command execution failed.
org.apache.commons.exec.ExecuteException: Process exited with an error: 1 (Exit value: 1)
    at org.apache.commons.exec.DefaultExecutor.executeInternal (DefaultExecutor.java:404)
    at org.apache.commons.exec.DefaultExecutor.execute (DefaultExecutor.java:166)
    at org.codehaus.mojo.exec.ExecMojo.executeCommandLine (ExecMojo.java:1000)
    at org.codehaus.mojo.exec.ExecMojo.executeCommandLine (ExecMojo.java:947)
    at org.codehaus.mojo.exec.ExecMojo.execute (ExecMojo.java:471)