Description

Our EuiComboBox component has two uses of the term "listBox" that need to be adjusted to "listbox" in all lower case. The component container, combobox, and listbox elements must have relevant aria-markup for a the WAI-ARIA 1.2 editable combobox with list autocomplete example or screen reader users may have a more difficult time interacting with our component.

The listbox also needs an accessible label. See the work done as part of #5292 for the way it was updated on EuiSuperSelect.

Guidance

• https://www.w3.org/WAI/WCAG21/Understanding/info-and-relationships.html
• https://www.w3.org/WAI/WCAG21/Understanding/name-role-value.html

Screenshot