Allow overlapping intervals for the compaction task

[jihoonson]

Description

#10742 accidentally introduced a regression bug that the compaction task doesn't allow overlapping intervals. This is a valid use case where you run a compaction task that overwrites a segment of a huge interval and other segments of smaller intervals that overlap the huge one.

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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.
• 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.

[suneet-s]

Is this to fix #10911?

[jihoonson]

No, this doesn't fix #10911.