InsPolicyService:createPolicyVersion – Payment Schedule Entry Behavior When useIsPaidFlag is True

When useIsPaidFlag is set to true during an MTA, InsPolicyService:createPolicyVersion excludes payment schedule entries from premium, tax, and fee recalculations if their Status is not 'Valid' or if the isPaid flag is checked. The service only updates future entries that are both 'Valid' and unpaid.

When calling createPolicyVersion for an MTA:
- If all existing payment entries have Status = 'Valid' → It will update the existing Payment Schedule Entries
- If any existing payment entry has Status != 'Valid' → new Payment Schedule Entries will be created.