Remove fee subtraction from the You Will Transfer total - ENG-3699

[victorkirov]

🔘 PR Type

What kind of change does this PR introduce?

• [x] Enhancement

📜 Background

When showing a transaction summary, we calculate the total amount transferred as the total inputs from your address - the total outputs from your address - fee. This is potentially incorrect as we are assuming that the user is paying the fee, when they aren't necessarily.

🔄 Changes

No longer subtract the fee from the total being transferred.

Impact:

• This will affect the total transferred amount in the txn confirmation screen in the psbts' screen.

✅ Review checklist

Please ensure the following are true before merging:

• [ ] Code Style is consistent with the project guidelines.
• [ ] Code is readable and well-commented.
• [ ] No unnecessary or debugging code has been added.
• [ ] Security considerations have been taken into account.
• [ ] The change has been manually tested and works as expected.
• [ ] Breaking changes and their impacts have been considered and documented.
• [ ] Code does not introduce new technical debt or issues.

[github-actions[bot]]

Test with build here: https://github.com/secretkeylabs/xverse-web-extension/actions/runs/7753997029