Backend [Integration Test] bounty.go handlers MakeBountyPayment

[AbdulWahab3181]

Describe your changes

Added Unit tests for bounty handlers MakeBountyPayment method

Issue ticket number and link

Closes #1564

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist before requesting a review

• I have performed a self-review of my code
• I have tested on Chrome and Firefox
• I have tested on a mobile device
• I have provided a screenshot or recording of changes in my PR if there were updates to the frontend

[elraphty]

@AbdulWahab3181 This will be merged tomorrow, it's payment related so I have to test it several times.