FINERACT-2181: Fix the interest calculation for non disbursed loan

[budaidev]

Description

Describe the changes made and why they were made.

Ignore if these details are present on the associated Apache Fineract JIRA ticket.

Checklist

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[adamsaghy]

LGTM

[adamsaghy]

@budaidev Please take a look on the failing tests cases and please change from FINERACT-2181 to FINERACT-2326 the PR title and commit message!