[v1.60] Fix #8182: KeyringInfo Refactor, Bump BraveCore to v1.60.81

[StephenHeaps]

Summary of Changes

• accountsInfo was removed from KeyringInfo. We must fetch accounts using GetAllAccounts api on Keyring Service now.

This pull request fixes #8182

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. Test setting up new wallet & wallet restore
2. Verify Ethereum & Solana accounts shown on Accounts tab
3. Test creating a send transaction
4. Verify Transaction Confirmation displays as expected (accounts shown in header)
5. Verify transaction shows on Activity tab
6. Verify accounts for token coin type shown in Asset Detail, transaction created in step 3 shows up
7. Tap the transaction and verify transaction detail displays as expected

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).