Fixes Issue #1285 (Icons out of sync on Tokens page)

[manavukani]

High Level Overview of Change

Add a unique key prop to elements in the Tokens table to fix icon mismatches after re-sorting.

Context of Change

Bug: On the Tokens page, when filtering by a category (eg: Stablecoin) and then sorting by market cap multiple times, tokens display incorrect icons. For example, RLUSD would have the highest market cap but show another token's icon.

Root cause: The elements rendered via tokens.map(renderToken) had no key prop. Adding a key of currency.issuer_account (unique per token) ensures React correctly tracks each row for sorting.

Type of Change

• 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)
• Refactor (non-breaking change that only restructures code)
• Tests (You added tests for code that already exists, or your new feature included in this PR)
• Documentation Updates
• Translation Updates
• Release

Codebase Modernization

• Updated files to React Hooks
• Updated files to TypeScript

Before / After

Before	After

Test Plan

[Patel-Raj11]

Thanks for this contribution!

[kuan121]

@manavukani Thanks for the contribution!