[ui5-button]: Badge content is ignored when accessible-name is used

[NakataCode]

Bug Description

When using a ui5-button with a badge (via slot="badge"), screen readers correctly read the full visual content including the badge (e.g., “Emphasized Tag Warning 999+.”). However, when an accessible-name is set on the button, the screen reader only reads the value of the accessible-name, and the badge content is ignored.

Affected Component

ui5-button

Expected Behaviour

When accessible-name is used, it should still be possible to include the badge content in what the screen reader announces.

Isolated Example

https://sap.github.io/ui5-webcomponents/nightly/packages/main/test/pages/Button.html

Steps to Reproduce

1.Open the example and find a button with a badge
2.Set accessible-name attribute to the button
3.It does not announce the badge anymore
...

Log Output, Stack Trace or Screenshots

No response

Priority

Medium

UI5 Web Components Version

2.9.0

Browser

Chrome

Operating System

Mac

Additional Context

Organization

SAP

Declaration

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