FINERACT-2421: Fix negative loan balance in the last repayment schedule of a closed loan

[oleksii-novikov-onix]

Description

Describe the changes made and why they were made. (Ignore if these details are present on the associated Apache Fineract JIRA ticket.)

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[adamsaghy]

@oleksii-novikov-onix Please squash your commits into one.

[adamsaghy]

duplicate: #5479