refactor: transaction repository

[alexbarnsley]

Summary

https://app.clickup.com/t/86dvd9jec

Since asset is no longer available, I've adjusted the queries to parse transaction data. An alternative to this approach would be to cache multipayment recipients (potentially using an adjusted scope), but this could cache a lot of data in the future.

Checklist

• I checked my UI changes against the design and there are no notable differences
• I checked my UI changes for any responsiveness issues
• I checked my UI changes in light AND dark mode
• I checked my (code) changes for obvious issues, debug statements and commented code
• I opened a corresponding card on Clickup for any remaining TODOs in my code
• I added a short description on how to test this PR (if necessary)
• Documentation (if necessary)
• Tests (if necessary)
• Ready to be merged