"Open" property on accordion

[caroliss]

Description

We would like a property on the accordion component that can be used to set the accordion open by default. This should be a boolean, and should also support dynamic expressions.
This would be useful to show some info to the user from the beginning, and also to make it possible to add an "open all" functionality.

Additional Information

No response

[danielskovli]

This can be implemented by passing a value to Accordion.Item -> defaultOpen.

Our implementation: Accordion, AccordtionItem.

[olemartinorg]

Adding to this, I think the AccordionGroup component could have an option to make sure only one of the children Accordion components are open at any point in time. I agree with the option for "open all", but that should not be possible to configure alongside a "only keep one accordion open simultaneously" option.