[v1.59] Fix #7866: AccountId Transaction Refactor, BraveCore v1.59.59

[StephenHeaps]

Summary of Changes

• Relatively easy change of using AccountId model instead of from address for most transaction methods.
• Using AccountId address for most lookups; this will change eventually with Bitcoin (array of from addresses instead of a single from address) but not yet determined exactly how.

This pull request fixes #7866

Submitter Checklist:

• Unit Tests are updated to cover new or changed functionality
• User-facing strings use NSLocalizableString()
• New or updated UI has been tested across:
  • Light & dark mode
  • Different size classes (iPhone, landscape, iPad)
  • Different dynamic type sizes

Test Plan:

1. Verify creating Send transactions is still working as expected for all coin types (verify from account is correct).
2. Verify creating Swap transactions is still working as expected for all coin types (verify from account is correct).
3. Verify Tx Confirmation showing transactions as expected, transactions show in Activity tab, Asset Detail & Account Detail.
4. Verify correct account displayed in Encrypt / Decrypt request (create request, dismiss request without cancel/approve, change accounts & verify account encryption request is for still shown).

Screenshots:

Reviewer Checklist:

• Issues include necessary QA labels:
  • QA/(Yes|No)
  • bug / enhancement
• Necessary security reviews have taken place.
• Adequate unit test coverage exists to prevent regressions.
• Adequate test plan exists for QA to validate (if applicable).
• Issue and pull request is assigned to a milestone (should happen at merge time).