Related to #4650. Fixed #4665.

Changelog Entry

Added

• Related to #4650. Added automated accessibility check using axe-core
  • HTML test: fix accessibility issues on HTML file, by @compulim, in PR #4685

Fixed

• Fixes #4665. Development server should works with latest ESBuild, @compulim, in PR #4685

Description

Fixed some accessibility issues related to the HTML files which contains our tests.

Also fixed issues after we bump ESBuild.

TODO

• autoScroll.withPostBack.activity.html: AC Input.ChoiceSet should use label attribute, than a TextBlock element
• autoScroll.withPostBack.page.html: AC Input.ChoiceSet should use label attribute, than a TextBlock element

Design

Specific Changes

• Injected <header> to test files
• Injected document.title
• Updated transcript to include image alt text for transcript navigation tests
• Fixed development server to works with latest ESBuild

• I have added tests and executed them locally
• I have updated CHANGELOG.md
• I have updated documentation

Review Checklist

This section is for contributors to review your work.

• Accessibility reviewed (tab order, content readability, alt text, color contrast)
• Browser and platform compatibilities reviewed
• CSS styles reviewed (minimal rules, no z-index)
• Documents reviewed (docs, samples, live demo)
• Internationalization reviewed (strings, unit formatting)
• package.json and package-lock.json reviewed
• Security reviewed (no data URIs, check for nonce leak)
• Tests reviewed (coverage, legitimacy)