[MessageView]: No tooltip for Error and Warning segmented buttons and their purpose must be read to the user

[wilson-xu-sap]

Describe the bug

No tooltip for Error and Warning segmented buttons and their purpose must be read to the user

The stackblitz example is copied form docs.
https://stackblitz.com/edit/github-9fhgrq5o-c9hdctvj?file=src%2FApp.tsx

Isolated Example

https://sap.github.io/ui5-webcomponents-react/v2/?path=/docs/user-feedback-messageview--docs

Reproduction steps

Use screen reader to traverse toggle buttons by focus

Expected Behaviour

No response

Screenshots or Videos

No response

UI5 Web Components for React Version

2.7

UI5 Web Components Version

2.7

Browser

Edge

Operating System

No response

Additional Context

No response

Relevant log output

Organization

No response

Declaration

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

[ui5-webcomponents-react-bot]

🎉 This issue has been resolved in version v2.9.0 🎉

The release is available on v2.9.0

Your semantic-release bot 📦🚀

[wilson-xu-sap]

Not fixed.
The a11y team said, "When focus moves to the error icon, the error icon displaying the count also needs to be read aloud."

[Lukas742]

HI @wilson-xu-sap

The count announcement will be added in: #7455