[experimental] preventing parent drag when interacting with a child dialog

Hi, I’m running into an issue where opening a dialog inside a draggable element causes the parent draggable to move whenever I try to interact with the dialog.

I found [this related issue](https://github.com/clauderic/dnd-kit/issues/477) for the old version of `dnd-kit`, but I can’t find anything similar for the experimental version.

I’ve looked into the docs on creating a custom sensor, but I have not been able to figure out have based on the docs

I’ve also tried calling `e.stopPropagation()` on almost every relevant handler and element, but that didn’t resolve the problem.

Has anyone run into this before or have tips on how to achieve this?