bug: Queued events could be wrongly emitted to Elements whose ElementId (VirtualDOM ID) have been reused

[marc2332]

This is a very weird edge case that makes the VirtualDOM fire events on Elements that have been removed and whose ElementId have been reused.

I simply need to retrieve the ElementId just before calling vdom.handle_event instead of getting it in events_measurer.

[marc2332]

This will mostly occur with keydown events, which will be queued in most cases and not bubble up, leading to the problem described above.