Drop does return initial drop event

[v1r0x]

Version(if relevant): 6.0.1 (Vue 3)

Expected:

Dropping a node onto another should return an object of type DropData in @drop event handler.

Actual:

Instead the "normal" drop event is returned

drop { target: span, buttons: 0, clientX: 726, clientY: 527, layerX: 38, layerY: 9 }

[v1r0x]

I could track down the problem. The dragTarget is (in my case) an element inside my (custom) node component. This also contains a data-path attribute, but containing the ids of that path instead of the indices. What I did to fix that is to add this code snippet to ondrop method in packages/core/src/index.ts:

export function ondrop<T>(target: HTMLElement, dragTarget: HTMLElement | null | undefined, dragTargetRoot: TreeData<T>[], dropTargetRoot: TreeData<T>[], next: (dropData: DropData<T>) => void) {
  // this is the new check to get the correct HTMLElement
  while (dragTarget && !dragTarget.classList.contains('tree-anchor')) {
    dragTarget = dragTarget.parentElement
  }

I don't know if this only affects the drop event or also others. I also don't know if this is something that has changed with Vue3 or is related to my custom component. So I'm not sure if this is worth a PR or not.
(I also have another problem with wrong DropPosition which I have to fix first :D)

Edit:
This also affects dragTarget in ondrag method in packages/core/src/index.ts