FINERACT-2421: Working Capital Delinquency pause different calculation

[alberto-art3ch]

Description

There was an issue with the different calculation of range schedule durations with diff endDate in case the same delinquency pauses were added, but in different order(from diff biz date)

FINERACT-2421

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[Aman-Mittal]

seems ok code wise

[Aman-Mittal]

Test Cases added and modified

[adamsaghy]

LGTM