UIK-3021/fullscreen-modal-tests

[Valeria-Zimnitskaya]

• Moved documentation examples to Storybook
• Removed unnecessary snapshot tests from unit tests
• Added accessibility (axe) tests
• Added test stories to cover props and requirements
• Added browser tests with snapshots, ARIA attributes, roles, and keyboard navigation checks
• All browser tests tun in ~30sec

Motivation and Context

How has this been tested?

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue).
• New feature (non-breaking change which adds functionality).
• Breaking change (fix or feature that would cause existing functionality to not work as expected).
• Nice improve.

Checklist:

• My code follows the code style of this project.
• I have updated the documentation accordingly or it's not required.
• Unit tests are not broken.
• I have added changelog note to corresponding CHANGELOG.md file with planned publish date.
• I have added new unit tests on added of fixed functionality.