[FIX] button tests and tooling config alignment

[andresito87]

Summary

Fixes the current mismatch between Button accessibility test expectations and the project test/tooling configuration.

Closes #141

Type of change

• 🧩 New component
• 🐛 Bug fix
• 🎨 Design tokens
• ♿ Accessibility
• 🏗️ Infrastructure
• 📚 Documentation

Component checklist (skip if not applicable)

• Follows the 5-file structure (types.ts, use*.ts, Component.tsx, index.ts, *.stories.tsx)
• CVA variants defined in types.ts, not inline
• No hardcoded colors — uses tokens from theme.css
• No any types — TypeScript strict
• ARIA attributes present and correct
• Keyboard navigable (Tab, Enter, Escape where applicable)
• Dark mode works correctly
• Storybook stories cover: default, variants, states (hover, focus, disabled)
• Tests added or updated

How to test

1. Run the related Button tests.
2. Verify src/components/atoms/button/Button.test.tsx now expects role="button" for aria-pressed cases.
3. Check vite.config.ts uses ./tests/setup.ts.
4. Check tsconfig.json targets ES2022.

Screenshots / recordings (if applicable)

No aplica.

Notes for reviewer

• Related to atom: Button — review and complete #124, but scoped only to this targeted fix.
• No new Button behavior is introduced.
• This PR only aligns tests and supporting config with the current project setup.

[Copilot]

Pull request overview

Aligns Button accessibility test expectations with the actual Button semantics, and brings the test/tooling configuration back into sync with the repository’s current folder layout and baseline TypeScript target (per issue #141).

Changes:

• Update Button tests to assert role="button" (not role="switch") for aria-pressed toggle-button cases.
• Fix Vitest setupFiles path to use ./tests/setup.ts (matching the repo’s tests/ directory).
• Adjust tsconfig.json compiler target from ES2024 to ES2022.

Reviewed changes

Copilot reviewed 2 out of 3 changed files in this pull request and generated no comments.

File	Description
vite.config.ts	Points Vitest setup to the existing tests/setup.ts file.
tsconfig.json	Lowers TS target to ES2022 to match the stated tooling baseline.
src/components/atoms/button/Button.test.tsx	Updates accessibility role expectations for aria-pressed cases to button.

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