Nestable Accordion - Keep One Item Open

I want to prevent having all items closed on the Nestable Accordion. Only one item can be open at a time, but one also has to be open at a time.

I’m thinking the only change I need to make is killing the listener on the open title element. This would allow the tabs to switch open tabs normally, but would remove the ability to close any of the tabs.

Any ideas where to find this? Is there another/better way to do this?

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@marshallwells23

Did you find any solution? I need the same solution. Would be appreciated if you could share it. Thank you!