onPointerEvent
Handles every typed pointer event that hits this modifier's laid-out bounds.
The callback runs on the owning tree thread in deepest/latest-painted-first dispatch order. Returning InputResult.Consumed stops ordinary event propagation; returning InputResult.Ignored allows earlier candidates to run.
Return
this chain with one appended active pointer-input node.
Parameters
callback
callback receiving the tree event and modifier-local position.