Can't use items on objects

[mapedorr]

Bug description

After selecting an item in the inventory and using it on a prop, a hotspot or a character, the _on_item_used() function is not called, so items can't be used.

Steps to reproduce

1. Click an item in the inventory to select it.
2. With the item selected, click on a prop, a hotspot, or a character with logic defined in the _on_item_used function for such item.
3. The function won't be called, then the logic won't be triggered.

https://github.com/carenalgas/popochiu/assets/4536477/eebf25d7-2156-4518-9652-b2a8ee17c311

Thanks to quieselbottom for reporting the bug and providing the evidence.

Expected vs observed behavior

_on_item_used should be called when using items on other objects.

Environment information (please complete):

• OS type and version: Windows 11
• Godot version: 4.2.2
• Plugin version or branch: Beta 3