Fix queries to conditionally include IsActiveEntity for non-draft entities

[PujaDeshmukh17]

Describe your changes

Updated DBQuery.java to conditionally include the IsActiveEntity column in CQL queries only when the field is present on the attachment entity, preventing runtime errors for non-draft entities that don't have this field.
Added unit tests to DBQueryTest.java covering both the IsActiveEntity-present and IsActiveEntity-absent paths for all three affected query methods.

Problem

Queries in getAttachmentsForUPID, getAttachmentsForUPIDAndRepository, and getAttachmentsForFolder unconditionally selected IsActiveEntity as a column. For entities that are not draft-enabled (i.e., do not have an IsActiveEntity element in their model), this caused an "element does not exist" error at runtime.

Changes

getAttachmentsForUPID — Checks attachmentEntity.findElement("IsActiveEntity").isPresent() before including IsActiveEntity in the column list.
getAttachmentsForUPIDAndRepository — Same conditional check applied.
getAttachmentsForFolder — Both the draft table query and the active entity fallback query now independently check for IsActiveEntity presence before including it (draftHasIsActiveEntity / activeHasIsActiveEntity).

Any documentation

• Single Tenant integration test: https://github.com/cap-java/sdm/actions/runs/31585004807
• Multi Tenant integration test: https://github.com/cap-java/sdm/actions/runs/31585189097

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)

Checklist before requesting a review

• I follow Java Development Guidelines for SAP
• I have tested the functionality on my cloud environment.
• I have provided sufficient automated/ unit tests for the code.
• I have increased or maintained the test coverage.
• I have ran integration tests on my cloud environment.
• I have validated blackduck portal for any vulnerability after my commit.

Upload Screenshots/lists of the scenarios tested

• I have Uploaded Screenshots or added lists of the scenarios tested in description

[akgarg06]

LGTM