test: add RefreshButton accessibility test suite

[star07770]

Description

Fixes #2596

Adds accessibility test coverage for the RefreshButton component.

Pillar

• 🛠️ Other (Bug fix, refactoring, docs)

What changed

• Added aria-label test for screen readers
• Added title attribute test for tooltip accessibility
• Added keyboard focus test
• Added disabled state test when pending

Visual Preview

N/A

Checklist before requesting a review:

• I have read the CONTRIBUTING.md file.
• I have tested these changes locally (localhost:3000/api/streak?user=YOUR_USERNAME)
• I have run npm run format and npm run lint locally and resolved all errors (CI will fail otherwise)
• My commits follow the Conventional Commits format (e.g., feat(themes): ..., fix(calculate): ...)
• I have made sure that I have only one commit to merge in this PR

[github-actions]

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[github-actions]

🚨 Hey @star07770, the CI Pipeline is failing on this PR and it has been marked as status:blocked.

Please fix the issues before this can be reviewed. Here's how:

1. Run checks locally before pushing:

npm run format:check   # Check Prettier formatting
npm run lint           # Run ESLint
npm run typecheck      # TypeScript type check
npm run test           # Run unit tests (Vitest)
npm run build          # Verify production build passes

2. Auto-fix common issues:

npm run format         # Auto-fix formatting with Prettier
npm run lint -- --fix  # Auto-fix lint errors where possible

3. Check the full failure log here:
👉 View CI Run

Once you push a fix and the CI passes, the status:blocked label will be removed automatically. 💪