[SF_ACC][MultiComboBox]: suggestion list item selected state is not announced

[sleric1024]

Describe the bug

When using the MultiComboBox, the items inside the suggestion list do not announce their selected state when read by a screen reader.

Although an item is already selected, when navigating through the suggestion list, the screen reader only reads the item text but does not indicate whether the item is selected.

This causes an accessibility issue because users relying on screen readers cannot determine which items are already selected.

Isolated Example

https://ui5.github.io/webcomponents-react/v2/?path=/story/inputs-multicombobox--default

Reproduction steps

1. Use MultiComboBox
2. Select one or more items
3. Open the suggestion list again
4. Navigate through items using keyboard and screen reader
5. Observe that the selected state is not announced

Expected Behaviour

When navigating through the suggestion list, the screen reader should announce the selected status of each item (for example: "selected" or equivalent ARIA state).

Screenshots or Videos

UI5 Web Components for React Version

2.16.1

UI5 Web Components Version

2.16.0

Browser

Chrome

Operating System

Windows

Additional Context

No response

Relevant log output

Organization

SAP - SF

Declaration

• I’m not disclosing any internal or sensitive information.

[Lukas742]

Thanks for reporting! I'll forward this issue to our UI5 Web Components Colleagues as the affected component is developed in their repository.

[kskondov]

Hello @UI5/ui5-team-ctr-ril can you take a look at this MultiComboBox issue?

Best Regards,
Konstantin