Does it work?

Does this add-on still work? Looks like the mouse event listeners are not created.

```
{{yield (assign
dd
(hash
trigger=(component dd.Trigger
onMouseDown=(action "prevent")
onMouseEnter=(action "open")
onMouseLeave=(action "close"))
content=(component dd.Content
onMouseEnter=(action "open")
onMouseLeave=(action "close")
)
)
)}}
```

Start by inspecting the add-on's handling of the mouse event callbacks shown in the issue, especially onMouseDown, onMouseEnter, and onMouseLeave. Reproduce the reported behavior and trace whether listeners are created for dd.Trigger and dd.Content; done means hover interactions work and the expected listeners are attached.

Scritto dal modello di indicizzazione a partire dal testo della issue.