feat: add ARIA attributes to popover overlay and target

[web-padawan]

Description

Part of vaadin/platform#5271

Added the following attributes:

• id and role on the overlay
• aria-haspopup on the target
• aria-controls on the target
• aria-expanded on the target

Also added properties to set accessible label:

• accessibleName to set aria-label on the overlay
• accessibleNameRef to set aria-labelledby on the overlay
• overlayRole property to set role on the overlay

Type of change

• Feature

Note

Below are results of testing in VoiceOver & Chrome:

Button focused, overlay closed

Button focused, overlay opened

Popover overlay focused

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud

[vaadin-bot]

This ticket/PR has been released with Vaadin 24.5.0.alpha1 and is also targeting the upcoming stable 24.5.0 version.