fix: resolve error invalid integer due to application fee amount

[mehul0810]

Bug Report

User Story

As a user, I want to process the donations properly with Stripe so that it will be consistent user experience.

Current Behavior

Currently, with amount $13.24 and other such amount I get an error logged "Invalid Integer"

Expected Behavior

I expect it to work properly with any donation amount.

Bug Type

• This bug describes functionality that once worked as expected in version X.X.X.
• This bug describes functionality that never worked as expected.
• I am not sure whether this functionality ever worked as expected.

Steps to Reproduce

1. Stripe Free + Fee Recovery
2. Create one time donation where anything other than an even dollar is collected.
3. Check logs for error about invalid integer."

Acceptance Criteria

• Reproduce the issue
• Research and find the cause of the issue
• Fix the issue
• Add couple of unit tests related to this issue so that we can avoid it with unit tests.
• Testing with Stripe CC
• Testing with Stripe Checkout