In verifying accesibility compatibility for #18374, I noticed that when dragging a list tile, the accessibility context gets lost when the tile picks up. Wrapping the Draggable in a MergeSemantics does not help.

Ideally, the semantics focus would persist when the drag event starts. The Android input language selector is a good example of this.

How is it possible to do this?

/cc @jonahwilliams