[solidjs] How to have a sticky element outside of the VList?

[ArjixWasTaken]

I have an element that is essentially in a parent element of the virtual list.
I'd like for that element to have position: sticky;, but it is important for that element to not be within the virtual list.

Previously this worked just fine because I wasn't using a virtual list, so the scrollHeight was in the parent element.
Now that I am using a VList, the scrollHeight is in the child element.

I assume I'll have to ditch VList and use the virtua api directly, can you give an example for doing that?
Here (PR) is where I use the VList, and here is where the sticky element is managed.

[ArjixWasTaken]

I re-designed my component tree to be one unified VList, using a discriminated union to define what type of item to render.