FINERACT-2455: Working Capital - Breach Effective Date

[alberto-art3ch]

Description

Expose breachEffectiveStartDate on the Working Capital loan retrieve response and in the WC loan business event payload. It returns breachStartDate + breachGraceDays when grace days are configured (> 0) and the earliest breached period is the first one — the date the borrower's cool off period ends and the breach window effectively begins — and null for any later period, since only the first period is shifted by the grace days.

FINERACT-2455

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