CNDE-1849: Refactor Investigation Service to use Kafka updates for Page Case Answers

[sveselev]

Notes

This PR improves overall performance by reducing the processing time in the Investigation Service. Direct interactions with RDB database replaces by delete/update via Kafka topic for nrt_page_case_answer.

JIRA

• Related story: CNDE-1849

Checklist

• PR focuses on a single story.
• New unit tests added and ensured they pass.
• Service has been tested in local and it works as expected.
• Documentation has been updated for this code change (if needed).
• Code follows the Java Coding Conventions (https://www.oracle.com/java/technologies/javase/codeconventions-programmingpractices.html).

Types of changes

What types of changes does this PR introduces?

• Bugfix
• New feature
• Breaking change

Testing

• Does this PR has >90% code coverage?
• Is the screenshot attached for code coverage?
• Does the gradle build pass in your local?
• Is the gradle build logs attached?

[alog-enquizit]

lgtm 👍

[upasanapattnaik-eq]

LGTM!

[sonarqubecloud]

Quality Gate failed

Failed conditions
81.8% Coverage on New Code (required ≥ 90%)
1 New Code Smells (required ≤ 0)

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