Remove unused GUI dev dependencies

[louiss72]

What changed

• Removed three unused direct src-gui dev dependencies:
  • @types/react-redux
  • @testing-library/react
  • @testing-library/user-event
• Updated yarn.lock to drop the corresponding direct lock entries.

Why

src-gui uses [email protected], which ships its own TypeScript declarations from react-redux/dist/react-redux.d.ts; the external @types/react-redux package targets the older DefinitelyTyped type surface and is no longer needed.

The two Testing Library packages are not imported anywhere under src-gui/src or the frontend config files, and this checkout does not contain frontend test files that use them.

Validation

• ./node_modules/.bin/eslint src/store/hooks.ts src/renderer/index.tsx
• TypeScript module resolution check confirmed react-redux resolves to node_modules/react-redux/dist/react-redux.d.ts
• rg -n "@types/react-redux|@testing-library/react|@testing-library/user-event" src-gui/package.json src-gui/yarn.lock src-gui/src returned no matches
• git diff --check

Full npm run tsc is still blocked in this checkout by the generated, gitignored src/models/tauriModel.ts being absent. Full npm run eslint is still blocked by existing React Compiler baseline errors unrelated to this dependency removal.

Closes #775

[Einliterflasche]

We are not accepting vibe coded PRs. https://github.com/eigenwallet/core/blob/master/AI_POLICY.md