[feature] Migrate to Pure Vitest Testing

[hasjack]

Overview

Currently using a mix of @testing-library and Vitest for component testing. We should consolidate to use pure Vitest for a more consistent testing approach.

Current Setup

• Using @testing-library/react for component rendering and queries
• Using @testing-library/jest-dom for DOM matchers
• Using @testing-library/user-event for user interactions
• Using Vitest for test runner and assertions

Required Changes

1. Remove testing-library packages:

   • @testing-library/dom
   • @testing-library/jest-dom
   • @testing-library/react
   • @testing-library/user-event

2. Update test files to use Vitest's built-in utilities:

   • Replace testing-library imports with Vitest equivalents
   • Update assertions to use Vitest matchers
   • Update component rendering approach

3. Update test configuration:

   • Modify vitest.config.ts for React testing setup
   • Ensure proper DOM environment configuration

Files to Update

• src/components/Race/Race.test.tsx
• src/components/ERC721/ERC721.test.tsx
• src/components/Paddock/hooks/useMovement.test.ts
• src/components/Metamask/Metamask.test.tsx
• src/components/Menu/Menu.test.tsx
• src/components/App/App.test.tsx
• src/components/EthTransactions/EthTransactions.test.tsx
• src/components/ERC20/ERC20.test.tsx

Benefits

• Single testing approach
• Simpler dependency management
• Better integration with Vitest features
• Consistent testing patterns across codebase