fix: Updated code to use 'putAll' method in assessment & activity aggregate APIs

[aimansharief]

Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context. List any dependencies that are required for this change.

Type of change

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• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

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• Ran Test A
• Ran Test B

Test Configuration:

• Software versions: Java-11, play2-2.7.2, scala-2.11, redis-5.0.3
• Hardware versions: 2 CPU / 4GB RAM

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

[Copilot]

Pull request overview

This PR introduces Cassandra update variants that use putAll for map columns (to merge keys rather than replacing the full map), and wires those new operations into the activity/assessment aggregators so map updates preserve existing entries.

Changes:

• Added CassandraUtil.createUpdateQueryWithPutAll to generate UPDATE statements that use putAll for map-typed values.
• Extended CassandraOperation + CassandraOperationImpl with updateRecordWithPutAll and batchUpdateWithPutAll.
• Switched assessment/activity aggregation flows to use the new putAll-based update paths.

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
core/sunbird-cassandra-utils/src/main/java/org/sunbird/common/CassandraUtil.java	Adds an UPDATE builder that uses putAll for map values to support merge semantics.
core/sunbird-cassandra-utils/src/main/java/org/sunbird/cassandraimpl/CassandraOperationImpl.java	Implements new update/batch-update entry points that delegate to the new QueryBuilder logic.
core/sunbird-cassandra-utils/src/main/java/org/sunbird/cassandra/CassandraOperation.java	Exposes new *WithPutAll APIs to callers.
assessment-aggregator/src/main/scala/org/sunbird/assessment/service/CassandraService.scala	Uses updateRecordWithPutAll when updating user activity aggregates.
assessment-aggregator/src/main/scala/org/sunbird/assessment/actor/AssessmentAggregatorActor.scala	Refactors actor wiring/dispatch and uses concrete service instantiation (not injectable).
assessment-aggregator/src/test/scala/org/sunbird/assessment/actor/AssessmentAggregatorActorSpec.scala	Updates actor construction (currently mismatched with existing mock-based test expectations).
activity-aggregator/src/main/scala/org/sunbird/activity/actor/ActivityAggregatorActor.scala	Switches activity aggregate batch updates to batchUpdateWithPutAll.

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[sonarqubecloud]

Quality Gate failed

Failed conditions
27.8% Duplication on New Code (required ≤ 3%)

See analysis details on SonarQube Cloud