Sidebar: Collapse already expanded menus on menu expansion

[OriginalSkain]

Hi there,

Firstly, thanks for all the great work on this project.

I’m using the Blazor Sidebar component and I’m wondering if it’s currently possible to have other expanded menus automatically collapse when a different menu item is expanded (i.e., an accordion-style behaviour).

I’ve reviewed the documentation but haven’t found anything that confirms whether this is already supported. Could you clarify if this behavior is available out-of-the-box?

If it isn’t supported yet, what would be the recommended process for raising a PR to add this functionality? Are there contribution guidelines, required patterns, or tests I should follow to ensure the change aligns with the project’s standards?

Thanks!