HDPI-3495-rent-arrears-section-backend

[AlexBuzea]

Jira link

https://tools.hmcts.net/jira/browse/HDPI-3495

Change description

Domain & Entity:

• Added rentArrearsAmountConfirmation field (YesNoNotSure) - whether defendant confirms the arrears amount
• Added rentArrearsAmount field (BigDecimal) - the actual rent arrears amount
• Added min/max validation (£1 to £1,000,000,000) with @ccd annotations
• Updated DefendantResponseEntity to persist both fields

Database:
- Migration V063__add_rent_arrears_response.sql:
- Added rent_arrears_amount_confirmation column (YES_NO_NOT_SURE)
- Added rent_arrears_amount column (NUMERIC(12, 2))

Service:

• Updated DefendantResponseService to map and save new fields to database

Tests Added

• Valid amount persistence tests
• Min/max validation boundary tests
• Field mapping verification
• SubmitEventHandlerTest - Updated for field rename
• RespondToPossessionDraftSavePageTest - Updated test data

Testing done

Tested locally linking Front End with Backend .

Security Vulnerability Assessment

CVE Suppression: Are there any CVEs present in the codebase (either newly introduced or pre-existing) that are being intentionally suppressed or ignored by this commit?

• Yes
• No

Checklist

• commit messages are meaningful and follow good commit message guidelines
• README and other documentation has been updated / added (if needed)
• tests have been updated / new tests has been added (if needed)
• Does this PR introduce a breaking change

[hmcts-jenkins-j-to-z]

Plan Result (aat)

No changes. Your infrastructure matches the configuration.