test(packages/tuono-router): improve test using mocks

[marcalexiei]

Checklist

• I have read Contributing > Pull requests

Related issue

Follow up of #633 (review)

Overview

• uniform comonent style title ("Test ComponentName Component" → "< ComponentName />")
• packages/tuono-router/src/components/Link.spec.tsx
  • add missing cleanup function
• packages/tuono-router/src/components/NotFound.spec.tsx
  • use vi.mocked instead of mock + vi.hoised
  • mock components and hooks directly used by NotFound.spec.tsx
  • replaced snapshots checks with mock checks to ensure component is working correctly
  • In order to have a consistent test system checks I created NotFoundDefaultContent instead of using snapshots or rtl checks
• packages/tuono-router/src/components/RouteMatch.spec.tsx
  • simplify createRouteComponent function
• packages/tuono-router/src/hooks/useRoute.spec.ts
  • use vi.mocked instead of mock + vi.hoised
  • remove redundant check on current route

[Valerioageno]

LGTM