[Bug]: sbb-expansion-panel radio-button-group shoul not be tabable if its disabled

[LEGlism]

Preflight Checklist

• I have read the Contributing Guidelines for this project.
• I agree to follow the Code of Conduct that this project adheres to.
• I have searched the issue tracker for an issue that matches the one I want to file, without success.

Bug type

Accessibility

It affects the following packages

Components

Which version of Lyne Components are you using

1.12.0

Operating system

No response

Browser / Browser version

No response

Input mode

None

Additional settings

No response

What happened?

If this structure is given, the disabled button group should not be tabable if it is disabled.
At the moment its possible to tab over this element.

Steps to reproduce the issue

1. Make an expansion panel in the same structure.
2. tab over an disabled panel

Relevant log output

No response